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<div class="title">i8086.cpp</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">// =============================================================================</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">// Based on code from:</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">//    * 8086tiny: a tiny, highly functional, highly portable PC emulator/VM</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">//      Copyright 2013-14, Adrian Cable (adrian.cable@gmail.com) - http://www.megalith.co.uk/8086tiny</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">//    * 8086tiny plus Revision 1.34 - Copyright 2014 Julian Olds - https://jaybertsoftware.weebly.com/8086-tiny-plus.html</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// This work is licensed under the MIT License. See included LICENSE.TXT.</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// Changes by Fabrizio Di Vittorio</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">//   - some heavy optimizations</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">//   - bug fixes on several instructions (HLT, divide by zero interrupt, ROL, ROR, RCL, RCR, SHL, SHR, DAA, DAS)</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">//   - expanded macros</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">//   - removed redundant code resulted from macro expansions</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">//   - moved Flags out of registers file</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">//   - moved some static variables into auto function vars</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">//   - moved decodes tables from BIOS to C code</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">//   - emulator commands executed as INT instead of custom CPU opcodes</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">//   - reset to 0xffff:0000 as real 8086</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">//   - LEA, removed mod=11 option</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">//   - registers moved to different area</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">//   - memory read/write no more direct but by callbacks</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &lt;stdio.h&gt;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &lt;string.h&gt;</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#include &quot;i8086.h&quot;</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacefabgl.html">fabgl</a> {</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="preprocessor">#pragma GCC optimize (&quot;O3&quot;)</span></div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#if FABGL_ESP_IDF_VERSION &gt; FABGL_ESP_IDF_VERSION_VAL(3, 3, 5)</span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="preprocessor">  #pragma GCC diagnostic ignored &quot;-Wimplicit-fallthrough&quot;</span></div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor">#define VIDEOMEM_START 0xA0000</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="preprocessor">#define VIDEOMEM_END   0xC0000</span></div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment">// 16-bit register decodes</span></div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="preprocessor">#define REG_AX                                   0</span></div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="preprocessor">#define REG_CX                                   1</span></div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor">#define REG_DX                                   2</span></div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="preprocessor">#define REG_BX                                   3</span></div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="preprocessor">#define REG_SP                                   4</span></div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="preprocessor">#define REG_BP                                   5</span></div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="preprocessor">#define REG_SI                                   6</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="preprocessor">#define REG_DI                                   7</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor">#define REG_ES                                   8</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor">#define REG_CS                                   9</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">#define REG_SS                                   10</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor">#define REG_DS                                   11</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="preprocessor">#define REG_ZERO                                 12</span></div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="preprocessor">#define REG_SCRATCH                              13</span></div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="preprocessor">#define REG_TMP                                  15</span></div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="comment">// 8-bit register decodes</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="preprocessor">#define REG_AL                                   0</span></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="preprocessor">#define REG_AH                                   1</span></div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="preprocessor">#define REG_CL                                   2</span></div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="preprocessor">#define REG_CH                                   3</span></div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="preprocessor">#define REG_DL                                   4</span></div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="preprocessor">#define REG_DH                                   5</span></div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="preprocessor">#define REG_BL                                   6</span></div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="preprocessor">#define REG_BH                                   7</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="comment">// FLAGS</span></div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="preprocessor">#define CF_ADDR 0</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="preprocessor">#define PF_ADDR 1</span></div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="preprocessor">#define AF_ADDR 2</span></div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="preprocessor">#define ZF_ADDR 3</span></div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="preprocessor">#define SF_ADDR 4</span></div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="preprocessor">#define TF_ADDR 5</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="preprocessor">#define IF_ADDR 6</span></div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="preprocessor">#define DF_ADDR 7</span></div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="preprocessor">#define OF_ADDR 8</span></div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="preprocessor">#define XX_ADDR 9</span></div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="preprocessor">#define FLAG_CF                                  (flags[CF_ADDR])</span></div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="preprocessor">#define FLAG_PF                                  (flags[PF_ADDR])</span></div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="preprocessor">#define FLAG_AF                                  (flags[AF_ADDR])</span></div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="preprocessor">#define FLAG_ZF                                  (flags[ZF_ADDR])</span></div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="preprocessor">#define FLAG_SF                                  (flags[SF_ADDR])</span></div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="preprocessor">#define FLAG_TF                                  (flags[TF_ADDR])</span></div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="preprocessor">#define FLAG_IF                                  (flags[IF_ADDR])</span></div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="preprocessor">#define FLAG_DF                                  (flags[DF_ADDR])</span></div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="preprocessor">#define FLAG_OF                                  (flags[OF_ADDR])</span></div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="comment">// Global variable definitions</span></div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="keyword">static</span> uint8_t    regs[48];</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="keyword">static</span> uint8_t    flags[10];</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="keyword">static</span> int32_t    regs_offset;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="keyword">static</span> uint8_t    * regs8, i_mod_size, i_d, i_w, raw_opcode_id, xlat_opcode_id, extra, rep_mode, seg_override_en, rep_override_en, trap_flag;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="keyword">static</span> uint16_t   * regs16, reg_ip, seg_override;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="keyword">static</span> uint32_t   op_source, op_dest, set_flags_type;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="keyword">static</span> int32_t    op_to_addr, op_from_addr;</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="keywordtype">void</span> *                    i8086::s_context;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;i8086::ReadPort           i8086::s_readPort;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;i8086::WritePort          i8086::s_writePort;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;i8086::WriteVideoMemory8  i8086::s_writeVideoMemory8;</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;i8086::WriteVideoMemory16 i8086::s_writeVideoMemory16;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;i8086::ReadVideoMemory8   i8086::s_readVideoMemory8;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;i8086::ReadVideoMemory16  i8086::s_readVideoMemory16;</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;i8086::Interrupt          i8086::s_interrupt;</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;uint8_t *                 i8086::s_memory;</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="keywordtype">bool</span>                      i8086::s_pendingIRQ;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;uint8_t                   i8086::s_pendingIRQIndex;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="keywordtype">bool</span>                      i8086::s_halted;</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;<span class="comment">// Table 0: R/M mode 1/2 &quot;register 1&quot; lookup</span></div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="keyword">static</span> uint8_t rm_mode12_reg1[]  = { 3, 3, 5, 5, 6, 7, 5, 3 };</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="comment">// Table 1: R/M mode 1/2 &quot;register 2&quot; lookup</span></div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="comment">// Table 5: R/M mode 0 &quot;register 2&quot; lookup</span></div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="keyword">static</span> uint8_t rm_mode012_reg2[] = { 6, 7, 6, 7, 12, 12, 12, 12 };</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="comment">// Table 2: R/M mode 1/2 &quot;DISP multiplier&quot; lookup</span></div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;<span class="keyword">static</span> uint8_t rm_mode12_disp[]  = { 1, 1, 1, 1, 1, 1, 1, 1 };</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;<span class="comment">// Table 3: R/M mode 1/2 &quot;default segment&quot; lookup</span></div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="keyword">static</span> uint8_t rm_mode12_dfseg[] = { 11, 11, 10, 10, 11, 11, 10, 11 };</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="comment">// Table 4: R/M mode 0 &quot;register 1&quot; lookup</span></div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="keyword">static</span> uint8_t rm_mode0_reg1[]   = { 3, 3, 5, 5, 6, 7, 12, 3 };</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;<span class="comment">// Table 6: R/M mode 0 &quot;DISP multiplier&quot; lookup</span></div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="keyword">static</span> uint8_t rm_mode0_disp[]   = { 0, 0, 0, 0, 0, 0, 1, 0 };</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;<span class="comment">// Table 7: R/M mode 0 &quot;default segment&quot; lookup</span></div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;<span class="keyword">static</span> uint8_t rm_mode0_dfseg[]  = { 11, 11, 10, 10, 11, 11, 11, 11 };</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;<span class="comment">// Table 8: Translation of raw opcode index (&quot;Raw ID&quot;) to function number (&quot;Xlat&#39;d ID&quot;)</span></div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;<span class="keyword">static</span> uint8_t xlat_ids[] = {   9,  9,  9,  9,  7,  7, 25, 26,  9,  9,  9,  9,  7,  7, 25, 50,</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;                                9,  9,  9,  9,  7,  7, 25, 26,  9,  9,  9,  9,  7,  7, 25, 26,</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;                                9,  9,  9,  9,  7,  7, 27, 28,  9,  9,  9,  9,  7,  7, 27, 28,</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;                                9,  9,  9,  9,  7,  7, 27, 29,  9,  9,  9,  9,  7,  7, 27, 29,</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;                                2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;                                3,  3,  3,  3,  3,  3,  3,  3,  4,  4,  4,  4,  4,  4,  4,  4,</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;                                53, 54, 55, 70, 71, 71, 72, 72, 56, 58, 57, 58, 59, 59, 60, 60,</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;                                0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;                                8,  8,  8,  8, 15, 15, 24, 24,  9,  9,  9,  9, 10, 10, 10, 10,</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;                                16, 16, 16, 16, 16, 16, 16, 16, 30, 31, 32, 69, 33, 34, 35, 36,</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;                                11, 11, 11, 11, 17, 17, 18, 18, 47, 47, 17, 17, 17, 17, 18, 18,</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;                                1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;                                12, 12, 19, 19, 37, 37, 20, 20, 51, 52, 19, 19, 38, 39, 40, 19,</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;                                12, 12, 12, 12, 41, 42, 43, 44, 69, 69, 69, 69, 69, 69, 69, 69,</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;                                13, 13, 13, 13, 21, 21, 22, 22, 14, 14, 14, 14, 21, 21, 22, 22,</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;                                48,  0, 23, 23, 49, 45,  6,  6, 46, 46, 46, 46, 46, 46,  5,  5 };</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;<span class="comment">// Table 9: Translation of Raw ID to Extra Data</span></div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;<span class="keyword">static</span> uint8_t ex_data[] = {  0,  0,  0,  0,  0,  0,  8,  8,  1,  1,  1,  1,  1,  1,  9, 36,</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;                              2,  2,  2,  2,  2,  2, 10, 10,  3,  3,  3,  3,  3,  3, 11, 11,</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;                              4,  4,  4,  4,  4,  4,  8,  0,  5,  5,  5,  5,  5,  5,  9,  1,</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;                              6,  6,  6,  6,  6,  6, 10,  2,  7,  7,  7,  7,  7,  7, 11,  0,</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;                              0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,  1,  1,  1,  1,</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;                              0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;                              0,  0, 21, 21, 21, 21, 21, 21,  0,  0,  0,  0, 21, 21, 21, 21,</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;                              21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;                              0,  0,  0,  0,  0,  0,  0,  0,  8,  8,  8,  8, 12, 12, 12, 12,</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;                              0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, 255, 0,</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;                              0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  2,  2,  1,  1,</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;                              0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;                              1,  1,  0,  0, 16, 22,  0,  0,  0,  0,  1,  1,  0, 255, 48, 2,</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;                              0,  0,  0,  0, 255, 255, 40, 11, 3, 3,  3,  3,  3,  3,  3,  3,</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;                              43, 43, 43, 43,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;                              1, 21,  0,  0,  2, 40, 21, 21, 80, 81, 92, 93, 94, 95,  0,  0 };</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;<span class="comment">// Table 10: How each Raw ID sets the flags (bit 1 = sets SZP, bit 2 = sets AF/OF for arithmetic, bit 3 = sets OF/CF for logic)</span></div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="keyword">static</span> uint8_t std_flags[] = {  3, 3, 3, 3, 3, 3, 0, 0, 5, 5, 5, 5, 5, 5, 0, 0,</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;                                1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0,</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;                                5, 5, 5, 5, 5, 5, 0, 1, 3, 3, 3, 3, 3, 3, 0, 1,</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;                                5, 5, 5, 5, 5, 5, 0, 1, 3, 3, 3, 3, 3, 3, 0, 1,</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;                                1, 1, 1, 1, 5, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 5, 5, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;                                0, 0, 0, 0, 5, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;<span class="comment">// Table 11: Parity flag loop-up table (256 entries)</span></div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;<span class="keyword">static</span> uint8_t parity[] = {   1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1 };</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;<span class="comment">// Table 12: Translation of Raw ID to base instruction size (bytes)</span></div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;<span class="keyword">static</span> uint8_t base_size[] = {  2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 2,</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;                                2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1,</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;                                2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1,</div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;                                2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1,</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;                                1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 1, 1, 1,</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;                                2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;                                2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1,</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;                                3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;                                3, 3, 0, 0, 2, 2, 2, 2, 4, 1, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;                                2, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2,</div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;                                2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 1, 1, 1, 1,</div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;                                1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 2, 2 };</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;</div><div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;<span class="comment">// Table 13: Translation of Raw ID to i_w size adder yes/no</span></div><div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;<span class="keyword">static</span> uint8_t i_w_adder[] = {  0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,</div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;                                0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;                                0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,</div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;                                0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0,</div><div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;                                1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;                                0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };</div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="comment">// Table 14: Translation of Raw ID to i_mod size adder yes/no</span></div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;<span class="keyword">static</span> uint8_t i_mod_adder[] = {  1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,</div><div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;                                  1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,</div><div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;                                  1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,</div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;                                  1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,</div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;                                  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;                                  1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;                                  1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1,</div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;                                  0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1 };</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;<span class="comment">// Table 15: Jxx decode table A</span></div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;<span class="keyword">static</span> uint8_t jxx_dec_a[]   = { OF_ADDR, CF_ADDR, ZF_ADDR, CF_ADDR, SF_ADDR, PF_ADDR, XX_ADDR, XX_ADDR };</div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;</div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;<span class="comment">// Table 16: Jxx decode table B</span></div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;<span class="keyword">static</span> uint8_t jxx_dec_b[]   = { XX_ADDR, XX_ADDR, XX_ADDR, ZF_ADDR, XX_ADDR, XX_ADDR, XX_ADDR, ZF_ADDR };</div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;<span class="comment">// Table 17: Jxx decode table C</span></div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;<span class="keyword">static</span> uint8_t jxx_dec_c[]   = { XX_ADDR, XX_ADDR, XX_ADDR,XX_ADDR, XX_ADDR, XX_ADDR, SF_ADDR, SF_ADDR };</div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;</div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;<span class="comment">// Table 18: Jxx decode table D</span></div><div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;<span class="keyword">static</span> uint8_t jxx_dec_d[]   = { XX_ADDR, XX_ADDR, XX_ADDR, XX_ADDR,XX_ADDR, XX_ADDR, OF_ADDR, OF_ADDR };</div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;</div><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;</div><div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;<span class="keyword">static</span> uint8_t * instr_table_lookup[] = {    rm_mode12_reg1,    <span class="comment">// 0</span></div><div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;                                             rm_mode012_reg2,   <span class="comment">// 1</span></div><div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;                                             rm_mode12_disp,    <span class="comment">// 2</span></div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;                                             rm_mode12_dfseg,   <span class="comment">// 3</span></div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;                                             rm_mode0_reg1,     <span class="comment">// 4</span></div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;                                             rm_mode012_reg2,   <span class="comment">// 5</span></div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;                                             rm_mode0_disp,     <span class="comment">// 6</span></div><div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;                                             rm_mode0_dfseg,    <span class="comment">// 7</span></div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;                                             xlat_ids,          <span class="comment">// 8 TABLE_XLAT_OPCODE</span></div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;                                             ex_data,           <span class="comment">// 9 TABLE_XLAT_SUBFUNCTION</span></div><div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;                                             std_flags,         <span class="comment">// 10 TABLE_STD_FLAGS</span></div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;                                             parity,            <span class="comment">// 11 TABLE_PARITY_FLAG</span></div><div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;                                             base_size,         <span class="comment">// 12 TABLE_BASE_INST_SIZE</span></div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;                                             i_w_adder,         <span class="comment">// 13 TABLE_I_W_SIZE</span></div><div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;                                             i_mod_adder,       <span class="comment">// 14 TABLE_I_MOD_SIZE</span></div><div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;                                          };</div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;</div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;</div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;</div><div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;</div><div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;<span class="keywordtype">void</span> i8086::setAL(uint8_t value)</div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;{</div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;  regs8[REG_AL] = value;</div><div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;}</div><div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;</div><div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;</div><div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;<span class="keywordtype">void</span> i8086::setAH(uint8_t value)</div><div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;{</div><div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;  regs8[REG_AH] = value;</div><div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;}</div><div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;</div><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;</div><div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;uint8_t i8086::AL()</div><div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;{</div><div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;  <span class="keywordflow">return</span> regs8[REG_AL];</div><div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;}</div><div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;</div><div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;</div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;uint8_t i8086::AH()</div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;{</div><div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;  <span class="keywordflow">return</span> regs8[REG_AH];</div><div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;}</div><div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;</div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;</div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;<span class="keywordtype">void</span> i8086::setBL(uint8_t value)</div><div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;{</div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;  regs8[REG_BL] = value;</div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;}</div><div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;</div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;</div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;<span class="keywordtype">void</span> i8086::setBH(uint8_t value)</div><div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;{</div><div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;  regs8[REG_BH] = value;</div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;}</div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;</div><div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;</div><div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;uint8_t i8086::BL()</div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;{</div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;  <span class="keywordflow">return</span> regs8[REG_BL];</div><div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;}</div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;</div><div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;</div><div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;uint8_t i8086::BH()</div><div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;{</div><div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;  <span class="keywordflow">return</span> regs8[REG_BH];</div><div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;}</div><div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;</div><div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;</div><div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;uint8_t i8086::CL()</div><div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;{</div><div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;  <span class="keywordflow">return</span> regs8[REG_CL];</div><div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;}</div><div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;</div><div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;</div><div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;uint8_t i8086::CH()</div><div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;{</div><div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;  <span class="keywordflow">return</span> regs8[REG_CH];</div><div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;}</div><div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;</div><div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;</div><div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;<span class="keywordtype">void</span> i8086::setAX(uint16_t value)</div><div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;{</div><div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;  regs16[REG_AX] = value;</div><div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;}</div><div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;</div><div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;</div><div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;<span class="keywordtype">void</span> i8086::setBX(uint16_t value)</div><div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;{</div><div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;  regs16[REG_BX] = value;</div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;}</div><div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;</div><div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;</div><div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;<span class="keywordtype">void</span> i8086::setCX(uint16_t value)</div><div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;{</div><div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;  regs16[REG_CX] = value;</div><div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;}</div><div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;</div><div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;</div><div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;<span class="keywordtype">void</span> i8086::setDX(uint16_t value)</div><div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;{</div><div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;  regs16[REG_DX] = value;</div><div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;}</div><div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;</div><div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;</div><div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;<span class="keywordtype">void</span> i8086::setCS(uint16_t value)</div><div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;{</div><div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;  regs16[REG_CS] = value;</div><div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;}</div><div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;</div><div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;</div><div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;<span class="keywordtype">void</span> i8086::setDS(uint16_t value)</div><div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;{</div><div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;  regs16[REG_DS] = value;</div><div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;}</div><div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;</div><div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;</div><div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;<span class="keywordtype">void</span> i8086::setSS(uint16_t value)</div><div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;{</div><div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;  regs16[REG_SS] = value;</div><div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;}</div><div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;</div><div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;</div><div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;<span class="keywordtype">void</span> i8086::setIP(uint16_t value)</div><div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;{</div><div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;  reg_ip = value;</div><div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;}</div><div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;</div><div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;</div><div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;<span class="keywordtype">void</span> i8086::setSP(uint16_t value)</div><div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;{</div><div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;  regs16[REG_SP] = value;</div><div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;}</div><div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;</div><div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;</div><div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;uint16_t i8086::AX()</div><div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;{</div><div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;  <span class="keywordflow">return</span> regs16[REG_AX];</div><div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;}</div><div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;</div><div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;</div><div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;uint16_t i8086::BX()</div><div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;{</div><div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;  <span class="keywordflow">return</span> regs16[REG_BX];</div><div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;}</div><div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;</div><div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;</div><div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;uint16_t i8086::CX()</div><div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;{</div><div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;  <span class="keywordflow">return</span> regs16[REG_CX];</div><div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;}</div><div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;</div><div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;</div><div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;uint16_t i8086::DX()</div><div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;{</div><div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;  <span class="keywordflow">return</span> regs16[REG_DX];</div><div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;}</div><div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;</div><div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;</div><div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;uint16_t i8086::BP()</div><div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;{</div><div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;  <span class="keywordflow">return</span> regs16[REG_BP];</div><div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;}</div><div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;</div><div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;</div><div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;uint16_t i8086::SI()</div><div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;{</div><div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;  <span class="keywordflow">return</span> regs16[REG_SI];</div><div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;}</div><div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;</div><div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;</div><div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;uint16_t i8086::DI()</div><div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;{</div><div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;  <span class="keywordflow">return</span> regs16[REG_DI];</div><div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;}</div><div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;</div><div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;</div><div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;uint16_t i8086::SP()</div><div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;{</div><div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;  <span class="keywordflow">return</span> regs16[REG_SP];</div><div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;}</div><div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;</div><div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;</div><div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;uint16_t i8086::CS()</div><div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;{</div><div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;  <span class="keywordflow">return</span> regs16[REG_CS];</div><div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;}</div><div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;</div><div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;</div><div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;uint16_t i8086::ES()</div><div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;{</div><div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;  <span class="keywordflow">return</span> regs16[REG_ES];</div><div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;}</div><div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;</div><div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;</div><div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;uint16_t i8086::DS()</div><div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;{</div><div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;  <span class="keywordflow">return</span> regs16[REG_DS];</div><div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;}</div><div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;</div><div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;</div><div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;uint16_t i8086::SS()</div><div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;{</div><div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;  <span class="keywordflow">return</span> regs16[REG_SS];</div><div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;}</div><div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;</div><div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;</div><div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;<span class="keywordtype">bool</span> i8086::flagIF()</div><div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;{</div><div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;  <span class="keywordflow">return</span> FLAG_IF;</div><div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;}</div><div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;</div><div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;</div><div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;<span class="keywordtype">bool</span> i8086::flagTF()</div><div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;{</div><div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;  <span class="keywordflow">return</span> FLAG_TF;</div><div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;}</div><div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;</div><div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;</div><div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;<span class="keywordtype">bool</span> i8086::flagCF()</div><div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;{</div><div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;  <span class="keywordflow">return</span> FLAG_CF;</div><div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;}</div><div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;</div><div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;</div><div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;<span class="keywordtype">bool</span> i8086::flagZF()</div><div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;{</div><div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;  <span class="keywordflow">return</span> FLAG_ZF;</div><div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;}</div><div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;</div><div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;<span class="keywordtype">void</span> i8086::setFlagZF(<span class="keywordtype">bool</span> value)</div><div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;{</div><div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;  FLAG_ZF = value;</div><div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;}</div><div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;</div><div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;</div><div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;<span class="keywordtype">void</span> i8086::setFlagCF(<span class="keywordtype">bool</span> value)</div><div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;{</div><div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;  FLAG_CF = value;</div><div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;}</div><div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;</div><div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;</div><div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;</div><div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;</div><div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;<span class="comment">// ret false if not acked</span></div><div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;<span class="keywordtype">bool</span> i8086::IRQ(uint8_t interrupt_num)</div><div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;{</div><div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;  <span class="keywordflow">if</span> (!s_pendingIRQ) {</div><div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;    s_pendingIRQ = <span class="keyword">true</span>;</div><div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;    s_pendingIRQIndex = interrupt_num;</div><div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;  }</div><div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;}</div><div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;</div><div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;</div><div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;</div><div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;</div><div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;</div><div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;<span class="comment">// direct RAM access (not video RAM)</span></div><div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;<span class="preprocessor">#define MEM8(addr)  s_memory[addr]</span></div><div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;<span class="preprocessor">#define MEM16(addr) (*(uint16_t*)(s_memory + (addr)))</span></div><div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;</div><div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;</div><div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;<span class="keyword">inline</span> __attribute__((always_inline)) uint8_t i8086::RMEM8(<span class="keywordtype">int</span> addr)</div><div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;{</div><div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;  <span class="keywordflow">if</span> (addr &gt;= VIDEOMEM_START &amp;&amp; addr &lt; VIDEOMEM_END) {</div><div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;    <span class="keywordflow">return</span> s_readVideoMemory8(s_context, addr);</div><div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;    <span class="keywordflow">return</span> s_memory[addr];</div><div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;  }</div><div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;}</div><div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;</div><div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;</div><div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;<span class="keyword">inline</span> __attribute__((always_inline)) uint16_t i8086::RMEM16(<span class="keywordtype">int</span> addr)</div><div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;{</div><div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;  <span class="keywordflow">if</span> (addr &gt;= VIDEOMEM_START &amp;&amp; addr &lt; VIDEOMEM_END) {</div><div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;    <span class="keywordflow">return</span> s_readVideoMemory16(s_context, addr);</div><div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;    <span class="keywordflow">return</span> *(uint16_t*)(s_memory + addr);</div><div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;  }</div><div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;}</div><div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;</div><div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;</div><div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;<span class="keyword">inline</span> __attribute__((always_inline)) uint8_t i8086::WMEM8(<span class="keywordtype">int</span> addr, uint8_t value)</div><div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;{</div><div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;  <span class="keywordflow">if</span> (addr &gt;= VIDEOMEM_START &amp;&amp; addr &lt; VIDEOMEM_END) {</div><div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;    s_writeVideoMemory8(s_context, addr, value);</div><div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;    s_memory[addr] = value;</div><div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;  }</div><div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;  <span class="keywordflow">return</span> value;</div><div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;}</div><div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;</div><div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;</div><div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;<span class="keyword">inline</span> __attribute__((always_inline)) uint16_t i8086::WMEM16(<span class="keywordtype">int</span> addr, uint16_t value)</div><div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;{</div><div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;  <span class="keywordflow">if</span> (addr &gt;= VIDEOMEM_START &amp;&amp; addr &lt; VIDEOMEM_END) {</div><div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;    s_writeVideoMemory16(s_context, addr, value);</div><div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;    *(uint16_t*)(s_memory + addr) = value;</div><div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;  }</div><div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;  <span class="keywordflow">return</span> value;</div><div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;}</div><div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;</div><div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;</div><div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;</div><div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;</div><div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;</div><div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;<span class="comment">// Helper functions</span></div><div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;</div><div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;<span class="comment">// Set carry flag</span></div><div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;<span class="keyword">static</span> int8_t set_CF(<span class="keywordtype">int</span> new_CF)</div><div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;{</div><div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;  <span class="keywordflow">return</span> FLAG_CF = !!new_CF;</div><div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;}</div><div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;</div><div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;</div><div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;<span class="comment">// Set auxiliary flag</span></div><div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;<span class="keyword">static</span> int8_t set_AF(<span class="keywordtype">int</span> new_AF)</div><div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;{</div><div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;  <span class="keywordflow">return</span> FLAG_AF = !!new_AF;</div><div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;}</div><div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;</div><div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;</div><div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;<span class="comment">// Set overflow flag</span></div><div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;<span class="keyword">static</span> int8_t set_OF(<span class="keywordtype">int</span> new_OF)</div><div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;{</div><div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;  <span class="keywordflow">return</span> FLAG_OF = !!new_OF;</div><div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;}</div><div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;</div><div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;</div><div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;<span class="comment">// Set auxiliary and overflow flag after arithmetic operations</span></div><div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;int8_t set_AF_OF_arith(int32_t op_result, uint8_t i_w)</div><div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;{</div><div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;  set_AF((op_source ^= op_dest ^ op_result) &amp; 0x10);</div><div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;  <span class="keywordflow">if</span> (op_result == op_dest)</div><div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;    <span class="keywordflow">return</span> FLAG_OF = 0;</div><div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;  <span class="keywordflow">else</span></div><div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;    <span class="keywordflow">return</span> set_OF(1 &amp; (FLAG_CF ^ op_source &gt;&gt; (8 * (i_w + 1) - 1)));</div><div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;}</div><div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;</div><div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;</div><div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;<span class="comment">// Assemble and return emulated CPU FLAGS register</span></div><div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;uint16_t i8086::make_flags()</div><div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;{</div><div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;<span class="preprocessor">  #if I80186MODE</span></div><div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;  uint16_t r = 0x0002;    <span class="comment">// to pass test186 tests, just unused bit nr. 1 is set to 1 (some programs checks this to know if this is a 80186 or 8086)</span></div><div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;<span class="preprocessor">  #else</span></div><div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;  uint16_t r = 0xf002;    <span class="comment">// for real 8086</span></div><div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;<span class="preprocessor">  #endif</span></div><div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;</div><div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;  <span class="keywordflow">return</span> r | FLAG_CF &lt;&lt; 0 | FLAG_PF &lt;&lt; 2 | FLAG_AF &lt;&lt; 4 | FLAG_ZF &lt;&lt; 6 | FLAG_SF &lt;&lt; 7 | FLAG_TF &lt;&lt; 8 | FLAG_IF &lt;&lt; 9 | FLAG_DF &lt;&lt; 10 | FLAG_OF &lt;&lt; 11;</div><div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;}</div><div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;</div><div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;</div><div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;<span class="keywordtype">void</span> i8086::set_flags(<span class="keywordtype">int</span> new_flags)</div><div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;{</div><div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;  FLAG_CF = (new_flags &gt;&gt; 0) &amp; 1;</div><div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;  FLAG_PF = (new_flags &gt;&gt; 2) &amp; 1;</div><div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;  FLAG_AF = (new_flags &gt;&gt; 4) &amp; 1;</div><div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;  FLAG_ZF = (new_flags &gt;&gt; 6) &amp; 1;</div><div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;  FLAG_SF = (new_flags &gt;&gt; 7) &amp; 1;</div><div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;  FLAG_TF = (new_flags &gt;&gt; 8) &amp; 1;</div><div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;  FLAG_IF = (new_flags &gt;&gt; 9) &amp; 1;</div><div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;  FLAG_DF = (new_flags &gt;&gt; 10) &amp; 1;</div><div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;  FLAG_OF = (new_flags &gt;&gt; 11) &amp; 1;</div><div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;}</div><div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;</div><div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;</div><div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;<span class="comment">// Convert raw opcode to translated opcode index. This condenses a large number of different encodings of similar</span></div><div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;<span class="comment">// instructions into a much smaller number of distinct functions, which we then execute</span></div><div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;<span class="keywordtype">void</span> i8086::set_opcode(uint8_t opcode)</div><div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;{</div><div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;  raw_opcode_id  = opcode;</div><div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;  xlat_opcode_id = xlat_ids[opcode];</div><div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;  extra          = ex_data[opcode];</div><div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;  i_mod_size     = i_mod_adder[opcode];</div><div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;  set_flags_type = std_flags[opcode];</div><div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;}</div><div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;</div><div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;</div><div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;<span class="comment">// Execute INT #interrupt_num on the emulated machine</span></div><div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;uint8_t i8086::pc_interrupt(uint8_t interrupt_num)</div><div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;{</div><div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;  <span class="comment">// fab: interrupt can exit from halt state</span></div><div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;  <span class="keywordflow">if</span> (s_halted) {</div><div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;    s_halted = <span class="keyword">false</span>;</div><div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;    ++reg_ip; <span class="comment">// go to next instruction after HLT</span></div><div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;  }</div><div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;</div><div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;  <span class="keywordflow">if</span> (!s_interrupt(s_context, interrupt_num)) {</div><div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;    regs16[REG_SP] -= 2;</div><div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;    MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = make_flags();</div><div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;</div><div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;    regs16[REG_SP] -= 2;</div><div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;    MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_CS];</div><div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;</div><div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;    regs16[REG_SP] -= 2;</div><div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;    MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = reg_ip;</div><div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;</div><div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;    regs16[REG_CS] = MEM16(4 * interrupt_num + 2);</div><div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;</div><div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;    reg_ip = MEM16(4 * interrupt_num);</div><div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;</div><div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;    FLAG_TF = FLAG_IF = 0;</div><div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;  }</div><div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;  <span class="keywordflow">return</span> 0;</div><div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;}</div><div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;</div><div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160;</div><div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;<span class="comment">// fab: necessary to go back to the first instruction prefix</span></div><div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;uint8_t i8086::raiseDivideByZeroInterrupt()</div><div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;{</div><div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;  <span class="keywordflow">if</span> (seg_override_en || rep_override_en) {</div><div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;    <span class="comment">// go back looking for segment prefixes or REP prefixes</span></div><div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;    <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div><div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160;      uint8_t opcode = MEM8(16 * regs16[REG_CS] + reg_ip - 1);</div><div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;      <span class="comment">// break if not REP and SEG</span></div><div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;      <span class="keywordflow">if</span> ((opcode &amp; 0xfe) != 0xf2 &amp;&amp; (opcode &amp; 0xe7) != 0x26)</div><div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;        <span class="keywordflow">break</span>;</div><div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160;      --reg_ip;</div><div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;    }</div><div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;  }</div><div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;  <span class="keywordflow">return</span> pc_interrupt(0);</div><div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;}</div><div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;</div><div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;</div><div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;<span class="comment">// AAA and AAS instructions - which_operation is +1 for AAA, and -1 for AAS</span></div><div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;<span class="keywordtype">int</span> i8086::AAA_AAS(int8_t which_operation)</div><div class="line"><a name="l00725"></a><span class="lineno">  725</span>&#160;{</div><div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;  regs16[REG_AX] += 262 * which_operation * set_AF(set_CF(((regs8[REG_AL] &amp; 0x0F) &gt; 9) || FLAG_AF));</div><div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160;  <span class="keywordflow">return</span> regs8[REG_AL] &amp;= 0x0F;</div><div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;}</div><div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;</div><div class="line"><a name="l00730"></a><span class="lineno">  730</span>&#160;</div><div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160;<span class="keywordtype">void</span> i8086::reset()</div><div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160;{</div><div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160;  regs_offset = (int32_t)(regs - s_memory);</div><div class="line"><a name="l00734"></a><span class="lineno">  734</span>&#160;</div><div class="line"><a name="l00735"></a><span class="lineno">  735</span>&#160;  regs8  = (uint8_t *)(s_memory + regs_offset);</div><div class="line"><a name="l00736"></a><span class="lineno">  736</span>&#160;  regs16 = (uint16_t *)(s_memory + regs_offset);</div><div class="line"><a name="l00737"></a><span class="lineno">  737</span>&#160;</div><div class="line"><a name="l00738"></a><span class="lineno">  738</span>&#160;  memset(regs8, 0, <span class="keyword">sizeof</span>(regs));</div><div class="line"><a name="l00739"></a><span class="lineno">  739</span>&#160;  set_flags(0);</div><div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160;</div><div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;  <span class="comment">// Initialise CPU state variables</span></div><div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;  seg_override_en = 0;</div><div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;  rep_override_en = 0;</div><div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;</div><div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;  s_halted = <span class="keyword">false</span>;</div><div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;</div><div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;  regs16[REG_CS] = 0xffff;</div><div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;  reg_ip = 0;</div><div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;}</div><div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;</div><div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160;</div><div class="line"><a name="l00752"></a><span class="lineno">  752</span>&#160;<span class="keywordtype">void</span> IRAM_ATTR i8086::step()</div><div class="line"><a name="l00753"></a><span class="lineno">  753</span>&#160;{</div><div class="line"><a name="l00754"></a><span class="lineno">  754</span>&#160;  uint8_t <span class="keyword">const</span> * opcode_stream = s_memory + 16 * regs16[REG_CS] + reg_ip;</div><div class="line"><a name="l00755"></a><span class="lineno">  755</span>&#160;</div><div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160;  <span class="comment">//printf(&quot;step %04X:%04X (%05X) op = %02X\n&quot;, regs16[REG_CS], reg_ip, 16 * regs16[REG_CS] + reg_ip, *opcode_stream);</span></div><div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160;</div><div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;<span class="preprocessor">  #if I8086_SHOW_OPCODE_STATS</span></div><div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;  <span class="keyword">static</span> uint32_t opcodeStats[256] = {0};</div><div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;  <span class="keyword">static</span> <span class="keywordtype">int</span>      opcodeStatsCount = 0;</div><div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;  <span class="keyword">static</span> uint64_t opcodeStatsT0 = esp_timer_get_time();</div><div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;  opcodeStats[*opcode_stream] += 1;</div><div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160;  ++opcodeStatsCount;</div><div class="line"><a name="l00764"></a><span class="lineno">  764</span>&#160;  <span class="keywordflow">if</span> ((opcodeStatsCount % 1000000) == 0) {</div><div class="line"><a name="l00765"></a><span class="lineno">  765</span>&#160;    opcodeStatsCount = 0;</div><div class="line"><a name="l00766"></a><span class="lineno">  766</span>&#160;    <span class="keywordflow">if</span> (Serial.available()) {</div><div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160;      Serial.read();</div><div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160;      printf(<span class="stringliteral">&quot;\ntime delta = %llu uS\n\n&quot;</span>, esp_timer_get_time() - opcodeStatsT0);</div><div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160;      opcodeStatsT0 = esp_timer_get_time();</div><div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;      <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 256; ++i) {</div><div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;        <span class="keywordflow">if</span> (opcodeStats[i] &gt; 0)</div><div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160;          printf(<span class="stringliteral">&quot;%d, %02X\n&quot;</span>, opcodeStats[i], i);</div><div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;        opcodeStats[i] = 0;</div><div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;      }</div><div class="line"><a name="l00775"></a><span class="lineno">  775</span>&#160;      printf(<span class="stringliteral">&quot;\n&quot;</span>);</div><div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;    }</div><div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160;  }</div><div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160;<span class="preprocessor">  #endif</span></div><div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;</div><div class="line"><a name="l00780"></a><span class="lineno">  780</span>&#160;  <span class="comment">// seg_override_en and rep_override_en contain number of instructions to hold segment override and REP prefix respectively</span></div><div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160;  <span class="keywordflow">if</span> (seg_override_en)</div><div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;    seg_override_en--;</div><div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160;  <span class="keywordflow">if</span> (rep_override_en)</div><div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160;    rep_override_en--;</div><div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160;</div><div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160;  <span class="comment">// quick and dirty processing of the most common instructions (statistically measured)</span></div><div class="line"><a name="l00787"></a><span class="lineno">  787</span>&#160;  <span class="keywordflow">switch</span> (*opcode_stream) {</div><div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160;</div><div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160;    <span class="comment">// SEG ES</span></div><div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160;    <span class="comment">// SEG CS</span></div><div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160;    <span class="comment">// SEG SS</span></div><div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160;    <span class="comment">// SEG DS</span></div><div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160;    <span class="keywordflow">case</span> 0x26:</div><div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;    <span class="keywordflow">case</span> 0x2e:</div><div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;    <span class="keywordflow">case</span> 0x36:</div><div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;    <span class="keywordflow">case</span> 0x3e:</div><div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;      seg_override_en = 2;</div><div class="line"><a name="l00798"></a><span class="lineno">  798</span>&#160;      seg_override    = ex_data[*opcode_stream];</div><div class="line"><a name="l00799"></a><span class="lineno">  799</span>&#160;      rep_override_en &amp;&amp; rep_override_en++;</div><div class="line"><a name="l00800"></a><span class="lineno">  800</span>&#160;      ++reg_ip;</div><div class="line"><a name="l00801"></a><span class="lineno">  801</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00802"></a><span class="lineno">  802</span>&#160;</div><div class="line"><a name="l00803"></a><span class="lineno">  803</span>&#160;    <span class="comment">// JO</span></div><div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160;    <span class="comment">// JNO</span></div><div class="line"><a name="l00805"></a><span class="lineno">  805</span>&#160;    <span class="comment">// JB/JNAE/JC</span></div><div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160;    <span class="comment">// JAE/JNB/JNC</span></div><div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;    <span class="comment">// JE/JZ</span></div><div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;    <span class="comment">// JNE/JNZ</span></div><div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160;    <span class="comment">// JBE/JNA</span></div><div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;    <span class="comment">// JA/JNBE</span></div><div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160;    <span class="comment">// JS</span></div><div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;    <span class="comment">// JNS</span></div><div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;    <span class="comment">// JP/JPE</span></div><div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;    <span class="comment">// JNP/JPO</span></div><div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160;    <span class="comment">// JL/JNGE</span></div><div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160;    <span class="comment">// JGE/JNL</span></div><div class="line"><a name="l00817"></a><span class="lineno">  817</span>&#160;    <span class="comment">// JLE/JNG</span></div><div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;    <span class="comment">// JG/JNLE</span></div><div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;    <span class="keywordflow">case</span> 0x70 ... 0x7f:</div><div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;    {</div><div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160;      <span class="keywordtype">int</span> inv = *opcode_stream &amp; 1; <span class="comment">// inv is the invert flag, e.g. i_w == 1 means JNAE, whereas i_w == 0 means JAE</span></div><div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160;      <span class="keywordtype">int</span> idx = (*opcode_stream &gt;&gt; 1) &amp; 7;</div><div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;      reg_ip += 2 + (int8_t)opcode_stream[1] * (inv ^ (flags[jxx_dec_a[idx]] || flags[jxx_dec_b[idx]] || flags[jxx_dec_c[idx]] ^ flags[jxx_dec_d[idx]]));</div><div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160;    }</div><div class="line"><a name="l00826"></a><span class="lineno">  826</span>&#160;</div><div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160;    <span class="comment">// JMP disp8</span></div><div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160;    <span class="keywordflow">case</span> 0xeb:</div><div class="line"><a name="l00829"></a><span class="lineno">  829</span>&#160;      reg_ip += 2 + (int8_t)opcode_stream[1];</div><div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;</div><div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160;    <span class="comment">// CLC|STC|CLI|STI|CLD|STD</span></div><div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160;    <span class="keywordflow">case</span> 0xf8 ... 0xfd:</div><div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160;    {</div><div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160;      <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> FADDR[3] = { CF_ADDR, IF_ADDR, DF_ADDR };</div><div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;      flags[FADDR[(*opcode_stream &gt;&gt; 1) &amp; 3]] = *opcode_stream &amp; 1;</div><div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160;      ++reg_ip;</div><div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160;    }</div><div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;</div><div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;    <span class="comment">// JCXZ</span></div><div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160;    <span class="keywordflow">case</span> 0xe3:</div><div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;      reg_ip += 2 + !regs16[REG_CX] * (int8_t)opcode_stream[1];</div><div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160;</div><div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160;    <span class="comment">// CALL disp16</span></div><div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;    <span class="keywordflow">case</span> 0xe8:</div><div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160;      regs16[REG_SP] -= 2;</div><div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = reg_ip + 3;</div><div class="line"><a name="l00850"></a><span class="lineno">  850</span>&#160;<span class="preprocessor">      #ifndef TESTING_CPU</span></div><div class="line"><a name="l00851"></a><span class="lineno">  851</span>&#160;      <span class="keyword">asm</span>(<span class="stringliteral">&quot; MEMW&quot;</span>);</div><div class="line"><a name="l00852"></a><span class="lineno">  852</span>&#160;<span class="preprocessor">      #endif</span></div><div class="line"><a name="l00853"></a><span class="lineno">  853</span>&#160;      reg_ip += 3 + *(uint16_t*)(opcode_stream + 1);</div><div class="line"><a name="l00854"></a><span class="lineno">  854</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00855"></a><span class="lineno">  855</span>&#160;</div><div class="line"><a name="l00856"></a><span class="lineno">  856</span>&#160;    <span class="comment">// RET (intrasegment)</span></div><div class="line"><a name="l00857"></a><span class="lineno">  857</span>&#160;    <span class="keywordflow">case</span> 0xc3:</div><div class="line"><a name="l00858"></a><span class="lineno">  858</span>&#160;      reg_ip = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div><div class="line"><a name="l00859"></a><span class="lineno">  859</span>&#160;      regs16[REG_SP] += 2;</div><div class="line"><a name="l00860"></a><span class="lineno">  860</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00861"></a><span class="lineno">  861</span>&#160;</div><div class="line"><a name="l00862"></a><span class="lineno">  862</span>&#160;    <span class="comment">// POP reg</span></div><div class="line"><a name="l00863"></a><span class="lineno">  863</span>&#160;    <span class="keywordflow">case</span> 0x58 ... 0x5f:</div><div class="line"><a name="l00864"></a><span class="lineno">  864</span>&#160;      regs16[REG_SP] += 2;  <span class="comment">// SP may be read from stack, so we have to increment here</span></div><div class="line"><a name="l00865"></a><span class="lineno">  865</span>&#160;      regs16[*opcode_stream &amp; 7] = MEM16(16 * regs16[REG_SS] + (uint16_t)(regs16[REG_SP] - 2));</div><div class="line"><a name="l00866"></a><span class="lineno">  866</span>&#160;      ++reg_ip;</div><div class="line"><a name="l00867"></a><span class="lineno">  867</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00868"></a><span class="lineno">  868</span>&#160;</div><div class="line"><a name="l00869"></a><span class="lineno">  869</span>&#160;    <span class="comment">// PUSH reg</span></div><div class="line"><a name="l00870"></a><span class="lineno">  870</span>&#160;    <span class="keywordflow">case</span> 0x50 ... 0x57:</div><div class="line"><a name="l00871"></a><span class="lineno">  871</span>&#160;      regs16[REG_SP] -= 2;</div><div class="line"><a name="l00872"></a><span class="lineno">  872</span>&#160;      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[*opcode_stream &amp; 7];</div><div class="line"><a name="l00873"></a><span class="lineno">  873</span>&#160;      ++reg_ip;</div><div class="line"><a name="l00874"></a><span class="lineno">  874</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00875"></a><span class="lineno">  875</span>&#160;</div><div class="line"><a name="l00876"></a><span class="lineno">  876</span>&#160;    <span class="comment">// MOV reg8, data8</span></div><div class="line"><a name="l00877"></a><span class="lineno">  877</span>&#160;    <span class="keywordflow">case</span> 0xb0 ... 0xb7:</div><div class="line"><a name="l00878"></a><span class="lineno">  878</span>&#160;      regs8[((*opcode_stream &gt;&gt; 2) &amp; 1) + (*opcode_stream &amp; 3) * 2] = *(opcode_stream + 1);</div><div class="line"><a name="l00879"></a><span class="lineno">  879</span>&#160;      reg_ip += 2;</div><div class="line"><a name="l00880"></a><span class="lineno">  880</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00881"></a><span class="lineno">  881</span>&#160;</div><div class="line"><a name="l00882"></a><span class="lineno">  882</span>&#160;    <span class="comment">// MOV reg16, data16</span></div><div class="line"><a name="l00883"></a><span class="lineno">  883</span>&#160;    <span class="keywordflow">case</span> 0xb8 ... 0xbf:</div><div class="line"><a name="l00884"></a><span class="lineno">  884</span>&#160;      regs16[*opcode_stream &amp; 0x7] = *(uint16_t*)(opcode_stream + 1);</div><div class="line"><a name="l00885"></a><span class="lineno">  885</span>&#160;      reg_ip += 3;</div><div class="line"><a name="l00886"></a><span class="lineno">  886</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00887"></a><span class="lineno">  887</span>&#160;</div><div class="line"><a name="l00888"></a><span class="lineno">  888</span>&#160;    <span class="comment">// POP ES</span></div><div class="line"><a name="l00889"></a><span class="lineno">  889</span>&#160;    <span class="comment">// POP CS (actually undefined on 8086)</span></div><div class="line"><a name="l00890"></a><span class="lineno">  890</span>&#160;    <span class="comment">// POP SS</span></div><div class="line"><a name="l00891"></a><span class="lineno">  891</span>&#160;    <span class="comment">// POP DS</span></div><div class="line"><a name="l00892"></a><span class="lineno">  892</span>&#160;    <span class="keywordflow">case</span> 0x07:</div><div class="line"><a name="l00893"></a><span class="lineno">  893</span>&#160;    <span class="keywordflow">case</span> 0x0f:</div><div class="line"><a name="l00894"></a><span class="lineno">  894</span>&#160;    <span class="keywordflow">case</span> 0x17:</div><div class="line"><a name="l00895"></a><span class="lineno">  895</span>&#160;    <span class="keywordflow">case</span> 0x1f:</div><div class="line"><a name="l00896"></a><span class="lineno">  896</span>&#160;      regs16[REG_ES + (*opcode_stream &gt;&gt; 3)] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div><div class="line"><a name="l00897"></a><span class="lineno">  897</span>&#160;      regs16[REG_SP] += 2;</div><div class="line"><a name="l00898"></a><span class="lineno">  898</span>&#160;      ++reg_ip;</div><div class="line"><a name="l00899"></a><span class="lineno">  899</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00900"></a><span class="lineno">  900</span>&#160;</div><div class="line"><a name="l00901"></a><span class="lineno">  901</span>&#160;    <span class="keywordflow">default</span>:</div><div class="line"><a name="l00902"></a><span class="lineno">  902</span>&#160;      stepEx(opcode_stream);</div><div class="line"><a name="l00903"></a><span class="lineno">  903</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l00904"></a><span class="lineno">  904</span>&#160;</div><div class="line"><a name="l00905"></a><span class="lineno">  905</span>&#160;  }</div><div class="line"><a name="l00906"></a><span class="lineno">  906</span>&#160;</div><div class="line"><a name="l00907"></a><span class="lineno">  907</span>&#160;  <span class="comment">// Application has set trap flag, so fire INT 1</span></div><div class="line"><a name="l00908"></a><span class="lineno">  908</span>&#160;  <span class="keywordflow">if</span> (trap_flag) {</div><div class="line"><a name="l00909"></a><span class="lineno">  909</span>&#160;    pc_interrupt(1);</div><div class="line"><a name="l00910"></a><span class="lineno">  910</span>&#160;  }</div><div class="line"><a name="l00911"></a><span class="lineno">  911</span>&#160;</div><div class="line"><a name="l00912"></a><span class="lineno">  912</span>&#160;  trap_flag = FLAG_TF;</div><div class="line"><a name="l00913"></a><span class="lineno">  913</span>&#160;</div><div class="line"><a name="l00914"></a><span class="lineno">  914</span>&#160;  <span class="comment">// Check for interrupts triggered by system interfaces</span></div><div class="line"><a name="l00915"></a><span class="lineno">  915</span>&#160;  <span class="keywordflow">if</span> (!seg_override_en &amp;&amp; !rep_override_en &amp;&amp; FLAG_IF &amp;&amp; !FLAG_TF &amp;&amp; s_pendingIRQ) {</div><div class="line"><a name="l00916"></a><span class="lineno">  916</span>&#160;    pc_interrupt(s_pendingIRQIndex);</div><div class="line"><a name="l00917"></a><span class="lineno">  917</span>&#160;    s_pendingIRQ = <span class="keyword">false</span>;</div><div class="line"><a name="l00918"></a><span class="lineno">  918</span>&#160;  }</div><div class="line"><a name="l00919"></a><span class="lineno">  919</span>&#160;</div><div class="line"><a name="l00920"></a><span class="lineno">  920</span>&#160;}</div><div class="line"><a name="l00921"></a><span class="lineno">  921</span>&#160;</div><div class="line"><a name="l00922"></a><span class="lineno">  922</span>&#160;</div><div class="line"><a name="l00923"></a><span class="lineno">  923</span>&#160;<span class="keywordtype">void</span> i8086::stepEx(uint8_t <span class="keyword">const</span> * opcode_stream)</div><div class="line"><a name="l00924"></a><span class="lineno">  924</span>&#160;{</div><div class="line"><a name="l00925"></a><span class="lineno">  925</span>&#160;  set_opcode(*opcode_stream);</div><div class="line"><a name="l00926"></a><span class="lineno">  926</span>&#160;</div><div class="line"><a name="l00927"></a><span class="lineno">  927</span>&#160;  <span class="comment">// Extract fields from instruction</span></div><div class="line"><a name="l00928"></a><span class="lineno">  928</span>&#160;  uint8_t i_reg4bit = raw_opcode_id &amp; 7;</div><div class="line"><a name="l00929"></a><span class="lineno">  929</span>&#160;  i_w = i_reg4bit &amp; 1;</div><div class="line"><a name="l00930"></a><span class="lineno">  930</span>&#160;  i_d = i_reg4bit / 2 &amp; 1;</div><div class="line"><a name="l00931"></a><span class="lineno">  931</span>&#160;</div><div class="line"><a name="l00932"></a><span class="lineno">  932</span>&#160;  <span class="comment">// Extract instruction data fields</span></div><div class="line"><a name="l00933"></a><span class="lineno">  933</span>&#160;  uint16_t i_data0 = * (int16_t *) &amp; opcode_stream[1];</div><div class="line"><a name="l00934"></a><span class="lineno">  934</span>&#160;  uint16_t i_data1 = * (int16_t *) &amp; opcode_stream[2];</div><div class="line"><a name="l00935"></a><span class="lineno">  935</span>&#160;  uint16_t i_data2 = * (int16_t *) &amp; opcode_stream[3];</div><div class="line"><a name="l00936"></a><span class="lineno">  936</span>&#160;</div><div class="line"><a name="l00937"></a><span class="lineno">  937</span>&#160;  uint8_t i_mod = 0, i_rm = 0, i_reg = 0;</div><div class="line"><a name="l00938"></a><span class="lineno">  938</span>&#160;  int32_t op_result = 0;</div><div class="line"><a name="l00939"></a><span class="lineno">  939</span>&#160;  int32_t rm_addr = 0;</div><div class="line"><a name="l00940"></a><span class="lineno">  940</span>&#160;</div><div class="line"><a name="l00941"></a><span class="lineno">  941</span>&#160;  <span class="keywordtype">bool</span> calcIP = <span class="keyword">true</span>;</div><div class="line"><a name="l00942"></a><span class="lineno">  942</span>&#160;</div><div class="line"><a name="l00943"></a><span class="lineno">  943</span>&#160;  <span class="comment">// i_mod_size &gt; 0 indicates that opcode uses i_mod/i_rm/i_reg, so decode them</span></div><div class="line"><a name="l00944"></a><span class="lineno">  944</span>&#160;  <span class="keywordflow">if</span> (i_mod_size) {</div><div class="line"><a name="l00945"></a><span class="lineno">  945</span>&#160;    i_mod = (i_data0 &amp; 0xFF) &gt;&gt; 6;</div><div class="line"><a name="l00946"></a><span class="lineno">  946</span>&#160;    i_rm  = i_data0 &amp; 7;</div><div class="line"><a name="l00947"></a><span class="lineno">  947</span>&#160;    i_reg = i_data0 / 8 &amp; 7;</div><div class="line"><a name="l00948"></a><span class="lineno">  948</span>&#160;</div><div class="line"><a name="l00949"></a><span class="lineno">  949</span>&#160;    <span class="keywordflow">if</span> ((!i_mod &amp;&amp; i_rm == 6) || (i_mod == 2))</div><div class="line"><a name="l00950"></a><span class="lineno">  950</span>&#160;      i_data2 = * (int16_t *) &amp; opcode_stream[4];</div><div class="line"><a name="l00951"></a><span class="lineno">  951</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (i_mod != 1)</div><div class="line"><a name="l00952"></a><span class="lineno">  952</span>&#160;      i_data2 = i_data1;</div><div class="line"><a name="l00953"></a><span class="lineno">  953</span>&#160;    <span class="keywordflow">else</span> <span class="comment">// If i_mod is 1, operand is (usually) 8 bits rather than 16 bits</span></div><div class="line"><a name="l00954"></a><span class="lineno">  954</span>&#160;      i_data1 = (int8_t) i_data1;</div><div class="line"><a name="l00955"></a><span class="lineno">  955</span>&#160;</div><div class="line"><a name="l00956"></a><span class="lineno">  956</span>&#160;    <span class="keywordtype">int</span> idx = 4 * !i_mod;</div><div class="line"><a name="l00957"></a><span class="lineno">  957</span>&#160;    op_to_addr = rm_addr = i_mod &lt; 3 ? 16 * regs16[seg_override_en ? seg_override : instr_table_lookup[idx + 3][i_rm]] + (uint16_t)(regs16[instr_table_lookup[idx + 1][i_rm]] + instr_table_lookup[idx + 2][i_rm] * i_data1 + regs16[instr_table_lookup[idx][i_rm]]) : (regs_offset + (i_w ? 2 * i_rm : (2 * i_rm + i_rm / 4) &amp; 7));</div><div class="line"><a name="l00958"></a><span class="lineno">  958</span>&#160;    op_from_addr = regs_offset + (i_w ? 2 * i_reg : (2 * i_reg + i_reg / 4) &amp; 7);</div><div class="line"><a name="l00959"></a><span class="lineno">  959</span>&#160;    <span class="keywordflow">if</span> (i_d) {</div><div class="line"><a name="l00960"></a><span class="lineno">  960</span>&#160;      <span class="keyword">auto</span> t = op_from_addr;</div><div class="line"><a name="l00961"></a><span class="lineno">  961</span>&#160;      op_from_addr = rm_addr;</div><div class="line"><a name="l00962"></a><span class="lineno">  962</span>&#160;      op_to_addr = t;</div><div class="line"><a name="l00963"></a><span class="lineno">  963</span>&#160;    }</div><div class="line"><a name="l00964"></a><span class="lineno">  964</span>&#160;  }</div><div class="line"><a name="l00965"></a><span class="lineno">  965</span>&#160;</div><div class="line"><a name="l00966"></a><span class="lineno">  966</span>&#160;  <span class="comment">// Instruction execution unit</span></div><div class="line"><a name="l00967"></a><span class="lineno">  967</span>&#160;  <span class="keywordflow">switch</span> (xlat_opcode_id) {</div><div class="line"><a name="l00968"></a><span class="lineno">  968</span>&#160;    <span class="keywordflow">case</span> 2: <span class="comment">// INC|DEC regs16</span></div><div class="line"><a name="l00969"></a><span class="lineno">  969</span>&#160;    {</div><div class="line"><a name="l00970"></a><span class="lineno">  970</span>&#160;      i_w = 1;</div><div class="line"><a name="l00971"></a><span class="lineno">  971</span>&#160;      i_d = 0;</div><div class="line"><a name="l00972"></a><span class="lineno">  972</span>&#160;      i_reg = i_reg4bit;</div><div class="line"><a name="l00973"></a><span class="lineno">  973</span>&#160;      <span class="keywordtype">int</span> idx = 4 * !i_mod;</div><div class="line"><a name="l00974"></a><span class="lineno">  974</span>&#160;      op_to_addr = rm_addr = i_mod &lt; 3 ? 16 * regs16[seg_override_en ? seg_override : instr_table_lookup[idx + 3][i_rm]] + (uint16_t)(regs16[instr_table_lookup[idx + 1][i_rm]] + instr_table_lookup[idx + 2][i_rm] * i_data1 + regs16[instr_table_lookup[idx][i_rm]]) : (regs_offset + 2 * i_rm);</div><div class="line"><a name="l00975"></a><span class="lineno">  975</span>&#160;      op_from_addr = regs_offset + 2 * i_reg;</div><div class="line"><a name="l00976"></a><span class="lineno">  976</span>&#160;      i_reg = extra;</div><div class="line"><a name="l00977"></a><span class="lineno">  977</span>&#160;    } <span class="comment">// not break!</span></div><div class="line"><a name="l00978"></a><span class="lineno">  978</span>&#160;    <span class="keywordflow">case</span> 5: <span class="comment">// INC|DEC|JMP|CALL|PUSH</span></div><div class="line"><a name="l00979"></a><span class="lineno">  979</span>&#160;      <span class="keywordflow">if</span> (i_reg &lt; 2) {</div><div class="line"><a name="l00980"></a><span class="lineno">  980</span>&#160;        <span class="comment">// INC|DEC</span></div><div class="line"><a name="l00981"></a><span class="lineno">  981</span>&#160;        <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l00982"></a><span class="lineno">  982</span>&#160;          op_dest = RMEM16(op_from_addr);</div><div class="line"><a name="l00983"></a><span class="lineno">  983</span>&#160;          op_result = WMEM16(op_from_addr, (uint16_t)op_dest + 1 - 2 * i_reg);</div><div class="line"><a name="l00984"></a><span class="lineno">  984</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00985"></a><span class="lineno">  985</span>&#160;          op_dest = RMEM8(op_from_addr);</div><div class="line"><a name="l00986"></a><span class="lineno">  986</span>&#160;          op_result = WMEM8(op_from_addr, (uint16_t)op_dest + 1 - 2 * i_reg);</div><div class="line"><a name="l00987"></a><span class="lineno">  987</span>&#160;        }</div><div class="line"><a name="l00988"></a><span class="lineno">  988</span>&#160;        op_source = 1;</div><div class="line"><a name="l00989"></a><span class="lineno">  989</span>&#160;        set_AF_OF_arith(op_result, i_w);</div><div class="line"><a name="l00990"></a><span class="lineno">  990</span>&#160;        set_OF(op_dest + 1 - i_reg == 1 &lt;&lt; (8 * (i_w + 1) - 1));</div><div class="line"><a name="l00991"></a><span class="lineno">  991</span>&#160;        <span class="keywordflow">if</span> (xlat_opcode_id == 5)</div><div class="line"><a name="l00992"></a><span class="lineno">  992</span>&#160;          set_opcode(0x10); <span class="comment">// Decode like ADC</span></div><div class="line"><a name="l00993"></a><span class="lineno">  993</span>&#160;      } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (i_reg != 6) {</div><div class="line"><a name="l00994"></a><span class="lineno">  994</span>&#160;        <span class="comment">// JMP|CALL</span></div><div class="line"><a name="l00995"></a><span class="lineno">  995</span>&#160;        uint16_t jumpTo = i_w ? MEM16(op_from_addr) : MEM8(op_from_addr); <span class="comment">// to avoid ASM_MEMW</span></div><div class="line"><a name="l00996"></a><span class="lineno">  996</span>&#160;        <span class="keywordflow">if</span> (i_reg - 3 == 0) {</div><div class="line"><a name="l00997"></a><span class="lineno">  997</span>&#160;          <span class="comment">// CALL (far)</span></div><div class="line"><a name="l00998"></a><span class="lineno">  998</span>&#160;          i_w = 1;</div><div class="line"><a name="l00999"></a><span class="lineno">  999</span>&#160;          regs16[REG_SP] -= 2;</div><div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>&#160;          MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_CS];</div><div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>&#160;        }</div><div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>&#160;        <span class="keywordflow">if</span> (i_reg &amp; 2) {</div><div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>&#160;          <span class="comment">// CALL (near or far)</span></div><div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>&#160;          i_w = 1;</div><div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>&#160;          regs16[REG_SP] -= 2;</div><div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>&#160;          MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = (reg_ip + 2 + i_mod * (i_mod != 3) + 2 * (!i_mod &amp;&amp; i_rm == 6));</div><div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>&#160;        }</div><div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>&#160;        <span class="keywordflow">if</span> (i_reg &amp; 1) {</div><div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>&#160;          <span class="comment">// JMP|CALL (far)</span></div><div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>&#160;          regs16[REG_CS] = MEM16(op_from_addr + 2);</div><div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>&#160;        }</div><div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>&#160;        reg_ip = jumpTo;</div><div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>&#160;        <span class="keywordflow">return</span>; <span class="comment">// no calc IP, no flags</span></div><div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>&#160;      } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>&#160;        <span class="comment">// PUSH</span></div><div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>&#160;        i_w = 1;</div><div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>&#160;        regs16[REG_SP] -= 2;</div><div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>&#160;        MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = MEM16(rm_addr);</div><div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>&#160;      }</div><div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>&#160;    <span class="keywordflow">case</span> 6: <span class="comment">// TEST r/m, imm16 / NOT|NEG|MUL|IMUL|DIV|IDIV reg</span></div><div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>&#160;      op_to_addr = op_from_addr;</div><div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>&#160;</div><div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>&#160;      <span class="keywordflow">switch</span> (i_reg) {</div><div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>&#160;        <span class="keywordflow">case</span> 0: <span class="comment">// TEST</span></div><div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>&#160;          set_opcode(0x20); <span class="comment">// Decode like AND</span></div><div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>&#160;          reg_ip += i_w + 1;</div><div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>&#160;            op_dest = RMEM16(op_to_addr);</div><div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>&#160;            op_source = (uint16_t)i_data2;</div><div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>&#160;            op_result = (uint16_t)(op_dest &amp; op_source);</div><div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>&#160;            op_dest = RMEM8(op_to_addr);</div><div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>&#160;            op_source = (uint8_t)i_data2;</div><div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>&#160;            op_result = (uint8_t)(op_dest &amp; op_source);</div><div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>&#160;          }</div><div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>&#160;        <span class="keywordflow">case</span> 2: <span class="comment">// NOT</span></div><div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>&#160;          <span class="keywordflow">if</span> (i_w)</div><div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>&#160;            WMEM16(op_to_addr, ~RMEM16(op_from_addr));</div><div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>&#160;          <span class="keywordflow">else</span></div><div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>&#160;            WMEM8(op_to_addr, ~RMEM8(op_from_addr));</div><div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>&#160;        <span class="keywordflow">case</span> 3: <span class="comment">// NEG</span></div><div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>&#160;          <span class="keywordflow">if</span> (i_w)</div><div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>&#160;            op_result = WMEM16(op_to_addr, -(op_source = RMEM16(op_from_addr)));</div><div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>&#160;          <span class="keywordflow">else</span></div><div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>&#160;            op_result = WMEM8(op_to_addr, -(op_source = RMEM8(op_from_addr)));</div><div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>&#160;          op_dest = 0;</div><div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>&#160;          set_opcode(0x28); <span class="comment">// Decode like SUB</span></div><div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>&#160;          FLAG_CF = op_result &gt; op_dest;</div><div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>&#160;        <span class="keywordflow">case</span> 4: <span class="comment">// MUL</span></div><div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>&#160;            set_opcode(0x10);</div><div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>&#160;            regs16[REG_DX] = (op_result = RMEM16(rm_addr) * regs16[REG_AX]) &gt;&gt; 16;</div><div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>&#160;            regs16[REG_AX] = op_result;</div><div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>&#160;            set_OF(set_CF(op_result - (uint16_t)op_result));</div><div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>&#160;            set_opcode(0x10);</div><div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>&#160;            regs16[REG_AX] = op_result = RMEM8(rm_addr) * regs8[REG_AL];</div><div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>&#160;            set_OF(set_CF(op_result - (uint8_t) op_result));</div><div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>&#160;          }</div><div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>&#160;        <span class="keywordflow">case</span> 5: <span class="comment">// IMUL</span></div><div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>&#160;        {</div><div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>&#160;            set_opcode(0x10);</div><div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>&#160;            regs16[REG_DX] = (op_result = (int16_t)RMEM16(rm_addr) * (int16_t)regs16[REG_AX]) &gt;&gt; 16;</div><div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>&#160;            regs16[REG_AX] = op_result;</div><div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>&#160;            set_OF(set_CF(op_result - (int16_t)op_result));</div><div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>&#160;            set_opcode(0x10);</div><div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>&#160;            regs16[REG_AX] = op_result = (int8_t)RMEM8(rm_addr) * (int8_t)regs8[REG_AL];</div><div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>&#160;            set_OF(set_CF(op_result - (int8_t) op_result));</div><div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>&#160;          }</div><div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>&#160;        }</div><div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>&#160;        <span class="keywordflow">case</span> 6: <span class="comment">// DIV</span></div><div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>&#160;        {</div><div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>&#160;          int32_t scratch_int;</div><div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>&#160;          int32_t scratch_uint, scratch2_uint;</div><div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>&#160;            (scratch_int = RMEM16(rm_addr))</div><div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>&#160;            &amp;&amp;</div><div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>&#160;            !(scratch2_uint = (uint32_t)(scratch_uint = (regs16[REG_DX] &lt;&lt; 16) + regs16[REG_AX]) / scratch_int, scratch2_uint - (uint16_t) scratch2_uint)</div><div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>&#160;            ?</div><div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>&#160;            regs16[REG_DX] = scratch_uint - scratch_int * (regs16[REG_AX] = scratch2_uint)</div><div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>&#160;            :</div><div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>&#160;            (raiseDivideByZeroInterrupt(), calcIP = <span class="keyword">false</span>);</div><div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>&#160;            (scratch_int = RMEM8(rm_addr))</div><div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>&#160;            &amp;&amp;</div><div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>&#160;            !(scratch2_uint = (uint16_t)(scratch_uint = regs16[REG_AX]) / scratch_int, scratch2_uint - (uint8_t) scratch2_uint)</div><div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>&#160;            ?</div><div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>&#160;            regs8[REG_AH] = scratch_uint - scratch_int * (regs8[REG_AL] = scratch2_uint)</div><div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>&#160;            :</div><div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>&#160;            (raiseDivideByZeroInterrupt(), calcIP = <span class="keyword">false</span>);</div><div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>&#160;          }</div><div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>&#160;        }</div><div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>&#160;        <span class="keywordflow">case</span> 7: <span class="comment">// IDIV</span></div><div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>&#160;        {</div><div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>&#160;          int32_t scratch_int;</div><div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>&#160;          int32_t scratch2_uint, scratch_uint;</div><div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>&#160;            (scratch_int = (int16_t)RMEM16(rm_addr))</div><div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>&#160;            &amp;&amp;</div><div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>&#160;            !(scratch2_uint = (<span class="keywordtype">int</span>)(scratch_uint = (regs16[REG_DX] &lt;&lt; 16) + regs16[REG_AX]) / scratch_int, scratch2_uint - (int16_t) scratch2_uint)</div><div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>&#160;            ?</div><div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>&#160;            regs16[REG_DX] = scratch_uint - scratch_int * (regs16[REG_AX] = scratch2_uint)</div><div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>&#160;            :</div><div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>&#160;            (raiseDivideByZeroInterrupt(), calcIP = <span class="keyword">false</span>);</div><div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>&#160;            (scratch_int = (int8_t)RMEM8(rm_addr))</div><div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>&#160;            &amp;&amp;</div><div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>&#160;            !(scratch2_uint = (int16_t)(scratch_uint = regs16[REG_AX]) / scratch_int, scratch2_uint - (int8_t) scratch2_uint)</div><div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>&#160;            ?</div><div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>&#160;            regs8[REG_AH] = scratch_uint - scratch_int * (regs8[REG_AL] = scratch2_uint)</div><div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>&#160;            :</div><div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>&#160;            (raiseDivideByZeroInterrupt(), calcIP = <span class="keyword">false</span>);</div><div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>&#160;          }</div><div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>&#160;        }</div><div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>&#160;      };</div><div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>&#160;    <span class="keywordflow">case</span> 7: <span class="comment">// ADD|OR|ADC|SBB|AND|SUB|XOR|CMP AL/AX, immed</span></div><div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>&#160;      rm_addr = regs_offset;</div><div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>&#160;      i_data2 = i_data0;</div><div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>&#160;      i_mod = 3;</div><div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>&#160;      i_reg = extra;</div><div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>&#160;      reg_ip--;</div><div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>&#160;      <span class="comment">// not break!</span></div><div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>&#160;    <span class="keywordflow">case</span> 8: <span class="comment">// ADD|OR|ADC|SBB|AND|SUB|XOR|CMP reg, immed</span></div><div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>&#160;      op_to_addr = rm_addr;</div><div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>&#160;      regs16[REG_SCRATCH] = (i_d |= !i_w) ? (int8_t) i_data2 : i_data2;</div><div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>&#160;      op_from_addr = regs_offset + 2 * REG_SCRATCH;</div><div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>&#160;      reg_ip += !i_d + 1;</div><div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>&#160;      set_opcode(0x08 * (extra = i_reg));</div><div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>&#160;      <span class="comment">// not break!</span></div><div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>&#160;    <span class="keywordflow">case</span> 9: <span class="comment">// ADD|OR|ADC|SBB|AND|SUB|XOR|CMP|MOV reg, r/m</span></div><div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>&#160;      <span class="keywordflow">switch</span> (extra) {</div><div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>&#160;        <span class="keywordflow">case</span> 0: <span class="comment">// ADD</span></div><div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>&#160;        {</div><div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>&#160;            op_dest   = RMEM16(op_to_addr);</div><div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>&#160;            op_source = RMEM16(op_from_addr);</div><div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>&#160;            op_result = (uint16_t)(op_dest + op_source);</div><div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>&#160;            WMEM16(op_to_addr, op_result);</div><div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>&#160;            op_dest   = RMEM8(op_to_addr);</div><div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>&#160;            op_source = RMEM8(op_from_addr);</div><div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>&#160;            op_result = (uint8_t)(op_dest + op_source);</div><div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>&#160;            WMEM8(op_to_addr, op_result);</div><div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>&#160;          }</div><div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>&#160;          FLAG_CF = op_result &lt; op_dest;</div><div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>&#160;        }</div><div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>&#160;        <span class="keywordflow">case</span> 1: <span class="comment">// OR</span></div><div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>&#160;        {</div><div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>&#160;            op_dest   = RMEM16(op_to_addr);</div><div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>&#160;            op_source = RMEM16(op_from_addr);</div><div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>&#160;            op_result = op_dest | op_source;</div><div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>&#160;            WMEM16(op_to_addr, op_result);</div><div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>&#160;            op_dest   = RMEM8(op_to_addr);</div><div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>&#160;            op_source = RMEM8(op_from_addr);</div><div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>&#160;            op_result = op_dest | op_source;</div><div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>&#160;            WMEM8(op_to_addr, op_result);</div><div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>&#160;          }</div><div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>&#160;        }</div><div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>&#160;        <span class="keywordflow">case</span> 2: <span class="comment">// ADC</span></div><div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>&#160;            op_dest   = RMEM16(op_to_addr);</div><div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>&#160;            op_source = RMEM16(op_from_addr);</div><div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>&#160;            op_result = WMEM16(op_to_addr, op_dest + FLAG_CF + op_source);</div><div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>&#160;            op_dest   = RMEM8(op_to_addr);</div><div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>&#160;            op_source = RMEM8(op_from_addr);</div><div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>&#160;            op_result = WMEM8(op_to_addr, op_dest + FLAG_CF + op_source);</div><div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>&#160;          }</div><div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>&#160;          set_CF((FLAG_CF &amp;&amp; (op_result == op_dest)) || (+op_result &lt; +(<span class="keywordtype">int</span>) op_dest));</div><div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>&#160;          set_AF_OF_arith(op_result, i_w);</div><div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>&#160;        <span class="keywordflow">case</span> 3: <span class="comment">// SBB</span></div><div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>&#160;            op_dest   = RMEM16(op_to_addr);</div><div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>&#160;            op_source = RMEM16(op_from_addr);</div><div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>&#160;            op_result = WMEM16(op_to_addr, op_dest - (FLAG_CF + op_source));</div><div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>&#160;            op_dest   = RMEM8(op_to_addr);</div><div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>&#160;            op_source = RMEM8(op_from_addr);</div><div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>&#160;            op_result = WMEM8(op_to_addr, op_dest - (FLAG_CF + op_source));</div><div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>&#160;          }</div><div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>&#160;          set_CF((FLAG_CF &amp;&amp; (op_result == op_dest)) || (-op_result &lt; -(<span class="keywordtype">int</span>) op_dest));</div><div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>&#160;          set_AF_OF_arith(op_result, i_w);</div><div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>&#160;        <span class="keywordflow">case</span> 4: <span class="comment">// AND</span></div><div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>&#160;        {</div><div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>&#160;            op_dest   = RMEM16(op_to_addr);</div><div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>&#160;            op_source = RMEM16(op_from_addr);</div><div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>&#160;            op_result = op_dest &amp; op_source;</div><div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>&#160;            WMEM16(op_to_addr, op_result);</div><div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>&#160;            op_dest   = RMEM8(op_to_addr);</div><div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>&#160;            op_source = RMEM8(op_from_addr);</div><div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>&#160;            op_result = op_dest &amp; op_source;</div><div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>&#160;            WMEM8(op_to_addr, op_result);</div><div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>&#160;          }</div><div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>&#160;        }</div><div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>&#160;        <span class="keywordflow">case</span> 5: <span class="comment">// SUB</span></div><div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>&#160;            op_dest   = RMEM16(op_to_addr);</div><div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>&#160;            op_source = RMEM16(op_from_addr);</div><div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>&#160;            op_result = WMEM16(op_to_addr, op_dest - op_source);</div><div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>&#160;            op_dest   = RMEM8(op_to_addr);</div><div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>&#160;            op_source = RMEM8(op_from_addr);</div><div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>&#160;            op_result = WMEM8(op_to_addr, op_dest - op_source);</div><div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>&#160;          }</div><div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>&#160;          FLAG_CF = op_result &gt; op_dest;</div><div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>&#160;        <span class="keywordflow">case</span> 6: <span class="comment">// XOR</span></div><div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>&#160;        {</div><div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>&#160;            op_dest   = RMEM16(op_to_addr);</div><div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>&#160;            op_source = RMEM16(op_from_addr);</div><div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>&#160;            op_result = op_dest ^ op_source;</div><div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>&#160;            WMEM16(op_to_addr, op_result);</div><div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>&#160;            op_dest   = RMEM8(op_to_addr);</div><div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>&#160;            op_source = RMEM8(op_from_addr);</div><div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>&#160;            op_result = op_dest ^ op_source;</div><div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>&#160;            WMEM8(op_to_addr, op_result);</div><div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>&#160;          }</div><div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>&#160;        }</div><div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>&#160;        <span class="keywordflow">case</span> 7: <span class="comment">// CMP</span></div><div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>&#160;            op_dest   = RMEM16(op_to_addr);</div><div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>&#160;            op_source = RMEM16(op_from_addr);</div><div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>&#160;            op_dest   = RMEM8(op_to_addr);</div><div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>&#160;            op_source = RMEM8(op_from_addr);</div><div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>&#160;          }</div><div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>&#160;          op_result = op_dest - op_source;</div><div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>&#160;          FLAG_CF = op_result &gt; op_dest;</div><div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>&#160;        <span class="keywordflow">case</span> 8: <span class="comment">// MOV</span></div><div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>&#160;            WMEM16(op_to_addr, RMEM16(op_from_addr));</div><div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>&#160;            WMEM8(op_to_addr, RMEM8(op_from_addr));</div><div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>&#160;          }</div><div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>&#160;      };</div><div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>&#160;    <span class="keywordflow">case</span> 10: <span class="comment">// MOV sreg, r/m | POP r/m | LEA reg, r/m</span></div><div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>&#160;      <span class="keywordflow">if</span> (!i_w) { <span class="comment">// i_w == 0</span></div><div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>&#160;        <span class="comment">// MOV</span></div><div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>&#160;        i_w = 1;</div><div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>&#160;        i_reg += 8;</div><div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>&#160;        int32_t scratch2_uint = 4 * !i_mod;</div><div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>&#160;        rm_addr = i_mod &lt; 3 ?</div><div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>&#160;                              16 * regs16[seg_override_en ?</div><div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>&#160;                                                            seg_override</div><div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>&#160;                                                          : instr_table_lookup[scratch2_uint + 3][i_rm]] + (uint16_t)(regs16[instr_table_lookup[scratch2_uint + 1][i_rm]] + instr_table_lookup[scratch2_uint + 2][i_rm] * i_data1 + regs16[instr_table_lookup[scratch2_uint][i_rm]])</div><div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>&#160;                            : (regs_offset + (2 * i_rm));</div><div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>&#160;        <span class="keywordflow">if</span> (i_d) {</div><div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>&#160;          regs16[i_reg] = RMEM16(rm_addr);</div><div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>&#160;          WMEM16(rm_addr, regs16[i_reg]);</div><div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>&#160;        }</div><div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>&#160;      } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!i_d) {  <span class="comment">// i_w == 1 &amp;&amp; i_d == 0</span></div><div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>&#160;        <span class="comment">// LEA</span></div><div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>&#160;        <span class="keywordtype">int</span> idx = 4 * !i_mod;</div><div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>&#160;        regs16[i_reg] = regs16[instr_table_lookup[idx + 1][i_rm]] + instr_table_lookup[idx + 2][i_rm] * i_data1 + regs16[instr_table_lookup[idx][i_rm]];</div><div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>&#160;      } <span class="keywordflow">else</span> {  <span class="comment">// i_w == 1 &amp;&amp; i_d == 1</span></div><div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>&#160;        <span class="comment">// POP</span></div><div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>&#160;        regs16[REG_SP] += 2;</div><div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>&#160;        WMEM16(rm_addr, RMEM16(16 * regs16[REG_SS] + (uint16_t)(-2 + regs16[REG_SP])));</div><div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>&#160;      }</div><div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>&#160;    <span class="keywordflow">case</span> 11: <span class="comment">// MOV AL/AX, [loc]</span></div><div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>&#160;      rm_addr = 16 * regs16[seg_override_en ? seg_override : REG_DS] + i_data0;</div><div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>&#160;      <span class="keywordflow">if</span> (i_d) {</div><div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>&#160;        <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>&#160;          WMEM16(rm_addr, regs16[REG_AX]);</div><div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01294"></a><span class="lineno"> 1294</span>&#160;          WMEM8(rm_addr, regs8[REG_AL]);</div><div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>&#160;        }</div><div class="line"><a name="l01296"></a><span class="lineno"> 1296</span>&#160;      } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01297"></a><span class="lineno"> 1297</span>&#160;        <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01298"></a><span class="lineno"> 1298</span>&#160;          regs16[REG_AX] = RMEM16(rm_addr);</div><div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>&#160;          regs8[REG_AL] = RMEM8(rm_addr);</div><div class="line"><a name="l01301"></a><span class="lineno"> 1301</span>&#160;        }</div><div class="line"><a name="l01302"></a><span class="lineno"> 1302</span>&#160;      }</div><div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>&#160;      reg_ip += 3;</div><div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc IP, no flags</span></div><div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>&#160;    <span class="keywordflow">case</span> 12: <span class="comment">// ROL|ROR|RCL|RCR|SHL|SHR|???|SAR reg/MEM, 1/CL/imm (80186)</span></div><div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>&#160;    {</div><div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>&#160;      uint16_t scratch2_uint = (1 &amp; (i_w ? (int16_t)RMEM16(rm_addr) : RMEM8(rm_addr)) &gt;&gt; (8 * (i_w + 1) - 1));</div><div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>&#160;      uint16_t scratch_uint  = extra ? <span class="comment">// xxx reg/MEM, imm</span></div><div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>&#160;        (int8_t) i_data1 : <span class="comment">// xxx reg/MEM, CL</span></div><div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>&#160;        i_d ?</div><div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>&#160;        31 &amp; regs8[REG_CL] : <span class="comment">// xxx reg/MEM, 1</span></div><div class="line"><a name="l01312"></a><span class="lineno"> 1312</span>&#160;        1;</div><div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>&#160;      <span class="keywordflow">if</span> (scratch_uint) {</div><div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>&#160;        <span class="keywordflow">if</span> (i_reg &lt; 4) {</div><div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>&#160;          <span class="comment">// Rotate operations</span></div><div class="line"><a name="l01316"></a><span class="lineno"> 1316</span>&#160;          scratch_uint %= i_reg / 2 + 8 * (i_w + 1);</div><div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>&#160;          scratch2_uint = i_w ? RMEM16(rm_addr) : RMEM8(rm_addr);</div><div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>&#160;        }</div><div class="line"><a name="l01319"></a><span class="lineno"> 1319</span>&#160;        <span class="keywordflow">if</span> (i_reg &amp; 1) {</div><div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>&#160;          <span class="comment">// Rotate/shift right operations</span></div><div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>&#160;            op_dest   = RMEM16(rm_addr);</div><div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>&#160;            op_result = WMEM16(rm_addr, (uint16_t)op_dest &gt;&gt; scratch_uint);</div><div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>&#160;            op_dest   = RMEM8(rm_addr);</div><div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>&#160;            op_result = WMEM8(rm_addr, (uint8_t)op_dest &gt;&gt; (uint8_t)scratch_uint);</div><div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>&#160;          }</div><div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>&#160;          <span class="comment">// Rotate/shift left operations</span></div><div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>&#160;            op_dest   = RMEM16(rm_addr);</div><div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>&#160;            op_result = WMEM16(rm_addr, (uint16_t)op_dest &lt;&lt; scratch_uint);</div><div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>&#160;            op_dest   = RMEM8(rm_addr);</div><div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>&#160;            op_result = WMEM8(rm_addr, (uint8_t)op_dest &lt;&lt; (uint8_t)scratch_uint);</div><div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>&#160;          }</div><div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>&#160;        }</div><div class="line"><a name="l01338"></a><span class="lineno"> 1338</span>&#160;        <span class="keywordflow">if</span> (i_reg &gt; 3) <span class="comment">// Shift operations</span></div><div class="line"><a name="l01339"></a><span class="lineno"> 1339</span>&#160;          set_flags_type = 1; <span class="comment">// Shift instructions affect SZP</span></div><div class="line"><a name="l01340"></a><span class="lineno"> 1340</span>&#160;        <span class="keywordflow">if</span> (i_reg &gt; 4) <span class="comment">// SHR or SAR</span></div><div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>&#160;          set_CF(op_dest &gt;&gt; (scratch_uint - 1) &amp; 1);</div><div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>&#160;      }</div><div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>&#160;</div><div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>&#160;      <span class="keywordflow">switch</span> (i_reg) {</div><div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>&#160;        <span class="keywordflow">case</span> 0: <span class="comment">// ROL</span></div><div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>&#160;            op_dest   = RMEM16(rm_addr);</div><div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>&#160;            op_result = WMEM16(rm_addr, (uint16_t)op_dest + (op_source = scratch2_uint &gt;&gt; (16 - scratch_uint)));</div><div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>&#160;            op_dest   = RMEM8(rm_addr);</div><div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>&#160;            op_result = WMEM8(rm_addr, (uint8_t)op_dest + (op_source = (uint8_t)scratch2_uint &gt;&gt; (8 - scratch_uint)));</div><div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>&#160;          }</div><div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>&#160;          <span class="keywordflow">if</span> (scratch_uint) <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div><div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>&#160;            set_OF((1 &amp; op_result &gt;&gt; (8 * (i_w + 1) - 1)) ^ set_CF(op_result &amp; 1));</div><div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>&#160;        <span class="keywordflow">case</span> 1: <span class="comment">// ROR</span></div><div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>&#160;          scratch2_uint &amp;= (1 &lt;&lt; scratch_uint) - 1;</div><div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>&#160;            op_dest   = RMEM16(rm_addr);</div><div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>&#160;            op_result = WMEM16(rm_addr, (uint16_t)op_dest + (op_source = scratch2_uint &lt;&lt; (16 - scratch_uint)));</div><div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>&#160;            op_dest   = RMEM8(rm_addr);</div><div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>&#160;            op_result = WMEM8(rm_addr, (uint8_t)op_dest + (op_source = (uint8_t)scratch2_uint &lt;&lt; (8 - scratch_uint)));</div><div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>&#160;          }</div><div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>&#160;          <span class="keywordflow">if</span> (scratch_uint) <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div><div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>&#160;            set_OF((1 &amp; (i_w ? (int16_t)op_result * 2 : op_result * 2) &gt;&gt; (8 * (i_w + 1) - 1)) ^ set_CF((1 &amp; (i_w ? (int16_t)op_result : op_result) &gt;&gt; (8 * (i_w + 1) - 1))));</div><div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>&#160;        <span class="keywordflow">case</span> 2: <span class="comment">// RCL</span></div><div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>&#160;            op_dest   = RMEM16(rm_addr);</div><div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>&#160;            op_result = WMEM16(rm_addr, (uint16_t)op_dest + (FLAG_CF &lt;&lt; (scratch_uint - 1)) + (op_source = scratch2_uint &gt;&gt; (17 - scratch_uint)));</div><div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>&#160;            op_dest   = RMEM8(rm_addr);</div><div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>&#160;            op_result = WMEM8(rm_addr, (uint8_t)op_dest + (FLAG_CF &lt;&lt; (scratch_uint - 1)) + (op_source = (uint8_t)scratch2_uint &gt;&gt; (9 - scratch_uint)));</div><div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>&#160;          }</div><div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>&#160;          <span class="keywordflow">if</span> (scratch_uint) <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div><div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>&#160;            set_OF((1 &amp; op_result &gt;&gt; (8 * (i_w + 1) - 1)) ^ set_CF(scratch2_uint &amp; 1 &lt;&lt; (8 * (i_w + 1) - scratch_uint)));</div><div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>&#160;        <span class="keywordflow">case</span> 3: <span class="comment">// RCR</span></div><div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>&#160;            op_dest   = RMEM16(rm_addr);</div><div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>&#160;            op_result = WMEM16(rm_addr, (uint16_t)op_dest + (FLAG_CF &lt;&lt; (16 - scratch_uint)) + (op_source = scratch2_uint &lt;&lt; (17 - scratch_uint)));</div><div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>&#160;            op_dest   = RMEM8(rm_addr);</div><div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>&#160;            op_result = WMEM8(rm_addr, (uint8_t)op_dest + (FLAG_CF &lt;&lt; (8 - scratch_uint)) + (op_source = (uint8_t)scratch2_uint &lt;&lt; (9 - scratch_uint)));</div><div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>&#160;          }</div><div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>&#160;          <span class="keywordflow">if</span> (scratch_uint) { <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div><div class="line"><a name="l01388"></a><span class="lineno"> 1388</span>&#160;            set_CF(scratch2_uint &amp; 1 &lt;&lt; (scratch_uint - 1));</div><div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>&#160;            set_OF((1 &amp; op_result &gt;&gt; (8 * (i_w + 1) - 1)) ^ (1 &amp; (i_w ? (int16_t)op_result * 2 : op_result * 2) &gt;&gt; (8 * (i_w + 1) - 1)));</div><div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>&#160;          }</div><div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>&#160;        <span class="keywordflow">case</span> 4: <span class="comment">// SHL</span></div><div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>&#160;          <span class="keywordflow">if</span> (scratch_uint) <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div><div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>&#160;            set_OF((1 &amp; op_result &gt;&gt; (8 * (i_w + 1) - 1)) ^ set_CF((1 &amp; (op_dest &lt;&lt; (scratch_uint - 1)) &gt;&gt; (8 * (i_w + 1) - 1))));</div><div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>&#160;        <span class="keywordflow">case</span> 5: <span class="comment">// SHR</span></div><div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>&#160;          <span class="keywordflow">if</span> (scratch_uint) <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div><div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>&#160;            set_OF((1 &amp; op_dest &gt;&gt; (8 * (i_w + 1) - 1)));</div><div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>&#160;        <span class="keywordflow">case</span> 7: <span class="comment">// SAR</span></div><div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>&#160;          scratch_uint &lt; 8 * (i_w + 1) || set_CF(scratch2_uint);</div><div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>&#160;          FLAG_OF = 0;</div><div class="line"><a name="l01403"></a><span class="lineno"> 1403</span>&#160;          <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>&#160;            op_dest      = RMEM16(rm_addr);</div><div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>&#160;            uint16_t u16 = (uint16_t)scratch2_uint * ~(((1 &lt;&lt; 16) - 1) &gt;&gt; scratch_uint);</div><div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>&#160;            op_result    = WMEM16(rm_addr, op_dest + (op_source = u16));</div><div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>&#160;          } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>&#160;            op_dest    = RMEM8(rm_addr);</div><div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>&#160;            uint8_t u8 = (uint8_t)scratch2_uint * ~(((1 &lt;&lt; 8) - 1) &gt;&gt; scratch_uint);</div><div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>&#160;            op_result  = WMEM8(rm_addr, op_dest + (op_source = u8));</div><div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>&#160;          }</div><div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>&#160;      };</div><div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>&#160;    }</div><div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>&#160;    <span class="keywordflow">case</span> 13: <span class="comment">// LOOPxx / JCXZ</span></div><div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>&#160;    {</div><div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>&#160;      int32_t scratch_uint = !!--regs16[REG_CX];</div><div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>&#160;      <span class="keywordflow">switch</span> (i_reg4bit) {</div><div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>&#160;        <span class="keywordflow">case</span> 0: <span class="comment">// LOOPNZ</span></div><div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>&#160;          scratch_uint &amp;= !FLAG_ZF;</div><div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>&#160;        <span class="keywordflow">case</span> 1: <span class="comment">// LOOPZ</span></div><div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>&#160;          scratch_uint &amp;= FLAG_ZF;</div><div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>&#160;          <span class="keywordflow">break</span>;</div><div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>&#160;        <span class="comment">// case 2 is LOOP</span></div><div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>&#160;      }</div><div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>&#160;      reg_ip += scratch_uint * (int8_t) i_data0;</div><div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>&#160;    }</div><div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>&#160;    <span class="keywordflow">case</span> 14: <span class="comment">// JMP | CALL int16_t/near</span></div><div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>&#160;      reg_ip += 3 - i_d;</div><div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>&#160;      <span class="keywordflow">if</span> (!i_w) {</div><div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>&#160;        <span class="keywordflow">if</span> (i_d) {</div><div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>&#160;          <span class="comment">// JMP far</span></div><div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>&#160;          reg_ip = 0;</div><div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>&#160;          regs16[REG_CS] = i_data2;</div><div class="line"><a name="l01438"></a><span class="lineno"> 1438</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>&#160;          <span class="comment">// CALL</span></div><div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>&#160;          i_w = 1;</div><div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>&#160;          regs16[REG_SP] -= 2;</div><div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>&#160;          MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = reg_ip;</div><div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>&#160;        }</div><div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>&#160;      }</div><div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>&#160;      reg_ip += i_d &amp;&amp; i_w ? (int8_t) i_data0 : i_data0;</div><div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc IP, no flags</span></div><div class="line"><a name="l01447"></a><span class="lineno"> 1447</span>&#160;    <span class="keywordflow">case</span> 15: <span class="comment">// TEST reg, r/m</span></div><div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>&#160;      <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01449"></a><span class="lineno"> 1449</span>&#160;        op_result = RMEM16(op_from_addr) &amp; RMEM16(op_to_addr);</div><div class="line"><a name="l01450"></a><span class="lineno"> 1450</span>&#160;      } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01451"></a><span class="lineno"> 1451</span>&#160;        op_result = RMEM8(op_from_addr) &amp; RMEM8(op_to_addr);</div><div class="line"><a name="l01452"></a><span class="lineno"> 1452</span>&#160;      }</div><div class="line"><a name="l01453"></a><span class="lineno"> 1453</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01454"></a><span class="lineno"> 1454</span>&#160;    <span class="keywordflow">case</span> 16: <span class="comment">// XCHG AX, regs16</span></div><div class="line"><a name="l01455"></a><span class="lineno"> 1455</span>&#160;      <span class="keywordflow">if</span> (i_reg4bit != REG_AX) {</div><div class="line"><a name="l01456"></a><span class="lineno"> 1456</span>&#160;        uint16_t t = regs16[REG_AX];</div><div class="line"><a name="l01457"></a><span class="lineno"> 1457</span>&#160;        regs16[REG_AX] = regs16[i_reg4bit];</div><div class="line"><a name="l01458"></a><span class="lineno"> 1458</span>&#160;        regs16[i_reg4bit] = t;</div><div class="line"><a name="l01459"></a><span class="lineno"> 1459</span>&#160;      }</div><div class="line"><a name="l01460"></a><span class="lineno"> 1460</span>&#160;      ++reg_ip;</div><div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>&#160;    <span class="keywordflow">case</span> 24: <span class="comment">// NOP|XCHG reg, r/m</span></div><div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>&#160;      <span class="keywordflow">if</span> (op_to_addr != op_from_addr) {</div><div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>&#160;        <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>&#160;          uint16_t t = RMEM16(op_to_addr);</div><div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>&#160;          WMEM16(op_to_addr, RMEM16(op_from_addr));</div><div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>&#160;          WMEM16(op_from_addr, t);</div><div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>&#160;          uint16_t t = RMEM8(op_to_addr);</div><div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>&#160;          WMEM8(op_to_addr, RMEM8(op_from_addr));</div><div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>&#160;          WMEM8(op_from_addr, t);</div><div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>&#160;        }</div><div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>&#160;      }</div><div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>&#160;    <span class="keywordflow">case</span> 17: <span class="comment">// MOVSx (extra=0)|STOSx (extra=1)|LODSx (extra=2)</span></div><div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>&#160;    {</div><div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>&#160;      int32_t seg = seg_override_en ? seg_override : REG_DS;</div><div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>&#160;      <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">int</span> dec = (2 * FLAG_DF - 1) * 2;</div><div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>&#160;        <span class="keywordflow">for</span> (int32_t i = rep_override_en ? regs16[REG_CX] : 1; i; --i) {</div><div class="line"><a name="l01481"></a><span class="lineno"> 1481</span>&#160;          uint16_t src = extra &amp; 1 ? regs16[REG_AX] : RMEM16(16 * regs16[seg] + regs16[REG_SI]);</div><div class="line"><a name="l01482"></a><span class="lineno"> 1482</span>&#160;          <span class="keywordflow">if</span> (extra &lt; 2)</div><div class="line"><a name="l01483"></a><span class="lineno"> 1483</span>&#160;            WMEM16(16 * regs16[REG_ES] + regs16[REG_DI], src);</div><div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>&#160;          <span class="keywordflow">else</span></div><div class="line"><a name="l01485"></a><span class="lineno"> 1485</span>&#160;            regs16[REG_AX] = src;</div><div class="line"><a name="l01486"></a><span class="lineno"> 1486</span>&#160;          extra &amp; 1 || (regs16[REG_SI] -= dec);</div><div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>&#160;          extra &amp; 2 || (regs16[REG_DI] -= dec);</div><div class="line"><a name="l01488"></a><span class="lineno"> 1488</span>&#160;        }</div><div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>&#160;      } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01490"></a><span class="lineno"> 1490</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">int</span> dec = (2 * FLAG_DF - 1);</div><div class="line"><a name="l01491"></a><span class="lineno"> 1491</span>&#160;        <span class="keywordflow">for</span> (int32_t i = rep_override_en ? regs16[REG_CX] : 1; i; --i) {</div><div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>&#160;          uint8_t src = extra &amp; 1 ? regs8[REG_AL] : RMEM8(16 * regs16[seg] + regs16[REG_SI]);</div><div class="line"><a name="l01493"></a><span class="lineno"> 1493</span>&#160;          <span class="keywordflow">if</span> (extra &lt; 2)</div><div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>&#160;            WMEM8(16 * regs16[REG_ES] + regs16[REG_DI], src);</div><div class="line"><a name="l01495"></a><span class="lineno"> 1495</span>&#160;          <span class="keywordflow">else</span></div><div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>&#160;            regs8[REG_AL] = src;</div><div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>&#160;          extra &amp; 1 || (regs16[REG_SI] -= dec);</div><div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>&#160;          extra &amp; 2 || (regs16[REG_DI] -= dec);</div><div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>&#160;        }</div><div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>&#160;      }</div><div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>&#160;      <span class="keywordflow">if</span> (rep_override_en)</div><div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>&#160;        regs16[REG_CX] = 0;</div><div class="line"><a name="l01503"></a><span class="lineno"> 1503</span>&#160;      ++reg_ip;</div><div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>&#160;    }</div><div class="line"><a name="l01506"></a><span class="lineno"> 1506</span>&#160;    <span class="keywordflow">case</span> 18: <span class="comment">// CMPSx (extra=0)|SCASx (extra=1)</span></div><div class="line"><a name="l01507"></a><span class="lineno"> 1507</span>&#160;    {</div><div class="line"><a name="l01508"></a><span class="lineno"> 1508</span>&#160;      <span class="keywordtype">int</span> count = rep_override_en ? regs16[REG_CX] : 1;</div><div class="line"><a name="l01509"></a><span class="lineno"> 1509</span>&#160;      <span class="keywordflow">if</span> (count) {</div><div class="line"><a name="l01510"></a><span class="lineno"> 1510</span>&#160;        <span class="keywordtype">int</span> incval = (2 * FLAG_DF - 1) * (i_w + 1);</div><div class="line"><a name="l01511"></a><span class="lineno"> 1511</span>&#160;        <span class="keywordflow">if</span> (extra) {</div><div class="line"><a name="l01512"></a><span class="lineno"> 1512</span>&#160;          <span class="comment">// SCASx</span></div><div class="line"><a name="l01513"></a><span class="lineno"> 1513</span>&#160;          op_dest = i_w ? regs16[REG_AX] : regs8[REG_AL];</div><div class="line"><a name="l01514"></a><span class="lineno"> 1514</span>&#160;          <span class="keywordflow">for</span> (; count; rep_override_en || count--) {</div><div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>&#160;            <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>&#160;              op_result = op_dest - (op_source = RMEM16(16 * regs16[REG_ES] + regs16[REG_DI]));</div><div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>&#160;            } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>&#160;              op_result = op_dest - (op_source = RMEM8(16 * regs16[REG_ES] + regs16[REG_DI]));</div><div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>&#160;            }</div><div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>&#160;            regs16[REG_DI] -= incval;</div><div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>&#160;            rep_override_en &amp;&amp; !(--regs16[REG_CX] &amp;&amp; ((!op_result) == rep_mode)) &amp;&amp; (count = 0);</div><div class="line"><a name="l01522"></a><span class="lineno"> 1522</span>&#160;          }</div><div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>&#160;          <span class="comment">// CMPSx</span></div><div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>&#160;          <span class="keywordtype">int</span> scratch2_uint = seg_override_en ? seg_override : REG_DS;</div><div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>&#160;          <span class="keywordflow">for</span> (; count; rep_override_en || count--) {</div><div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>&#160;            <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>&#160;              op_dest   = RMEM16(16 * regs16[scratch2_uint] + regs16[REG_SI]);</div><div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>&#160;              op_result = op_dest - (op_source = RMEM16(16 * regs16[REG_ES] + regs16[REG_DI]));</div><div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>&#160;            } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>&#160;              op_dest   = RMEM8(16 * regs16[scratch2_uint] + regs16[REG_SI]);</div><div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>&#160;              op_result = op_dest - (op_source = RMEM8(16 * regs16[REG_ES] + regs16[REG_DI]));</div><div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>&#160;            }</div><div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>&#160;            regs16[REG_SI] -= incval;</div><div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>&#160;            regs16[REG_DI] -= incval;</div><div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>&#160;            rep_override_en &amp;&amp; !(--regs16[REG_CX] &amp;&amp; ((!op_result) == rep_mode)) &amp;&amp; (count = 0);</div><div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>&#160;          }</div><div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>&#160;        }</div><div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>&#160;        set_flags_type = 1 | 2; <span class="comment">// Funge to set SZP/AO flags</span></div><div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>&#160;        FLAG_CF = op_result &gt; op_dest;</div><div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>&#160;      };</div><div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>&#160;      ++reg_ip;</div><div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>&#160;      calcIP = <span class="keyword">false</span>;</div><div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>&#160;    }</div><div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>&#160;    <span class="keywordflow">case</span> 19: <span class="comment">// RET|RETF|IRET</span></div><div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>&#160;      i_d = i_w;</div><div class="line"><a name="l01548"></a><span class="lineno"> 1548</span>&#160;      reg_ip = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div><div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>&#160;      regs16[REG_SP] += 2;</div><div class="line"><a name="l01550"></a><span class="lineno"> 1550</span>&#160;      <span class="keywordflow">if</span> (extra) {</div><div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>&#160;        <span class="comment">// IRET|RETF|RETF imm16</span></div><div class="line"><a name="l01552"></a><span class="lineno"> 1552</span>&#160;        regs16[REG_CS] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div><div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>&#160;        regs16[REG_SP] += 2;</div><div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>&#160;      }</div><div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>&#160;      <span class="keywordflow">if</span> (extra &amp; 2) {</div><div class="line"><a name="l01556"></a><span class="lineno"> 1556</span>&#160;        <span class="comment">// IRET</span></div><div class="line"><a name="l01557"></a><span class="lineno"> 1557</span>&#160;        set_flags(MEM16(16 * regs16[REG_SS] + regs16[REG_SP]));</div><div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>&#160;        regs16[REG_SP] += 2;</div><div class="line"><a name="l01559"></a><span class="lineno"> 1559</span>&#160;      } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!i_d) <span class="comment">// RET|RETF imm16</span></div><div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>&#160;        regs16[REG_SP] += i_data0;</div><div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>&#160;    <span class="keywordflow">case</span> 20: <span class="comment">// MOV r/m, immed</span></div><div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>&#160;      <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01564"></a><span class="lineno"> 1564</span>&#160;        WMEM16(op_from_addr, i_data2);</div><div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>&#160;      } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>&#160;        WMEM8(op_from_addr, i_data2);</div><div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>&#160;      }</div><div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>&#160;    <span class="keywordflow">case</span> 21: <span class="comment">// IN AL/AX, DX/imm8</span></div><div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>&#160;    {</div><div class="line"><a name="l01571"></a><span class="lineno"> 1571</span>&#160;      int32_t port = extra ? regs16[REG_DX] : (uint8_t) i_data0;</div><div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>&#160;      regs8[REG_AL] = s_readPort(s_context, port);</div><div class="line"><a name="l01573"></a><span class="lineno"> 1573</span>&#160;      <span class="keywordflow">if</span> (i_w)</div><div class="line"><a name="l01574"></a><span class="lineno"> 1574</span>&#160;        regs8[REG_AH] = s_readPort(s_context, port + 1);</div><div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01576"></a><span class="lineno"> 1576</span>&#160;    }</div><div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>&#160;    <span class="keywordflow">case</span> 22: <span class="comment">// OUT DX/imm8, AL/AX</span></div><div class="line"><a name="l01578"></a><span class="lineno"> 1578</span>&#160;    {</div><div class="line"><a name="l01579"></a><span class="lineno"> 1579</span>&#160;      int32_t port = extra ? regs16[REG_DX] : (uint8_t) i_data0;</div><div class="line"><a name="l01580"></a><span class="lineno"> 1580</span>&#160;      s_writePort(s_context, port, regs8[REG_AL]);</div><div class="line"><a name="l01581"></a><span class="lineno"> 1581</span>&#160;      <span class="keywordflow">if</span> (i_w)</div><div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>&#160;        s_writePort(s_context, port + 1, regs8[REG_AH]);</div><div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>&#160;    }</div><div class="line"><a name="l01585"></a><span class="lineno"> 1585</span>&#160;    <span class="keywordflow">case</span> 23: <span class="comment">// REPxx</span></div><div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>&#160;      rep_override_en = 2;</div><div class="line"><a name="l01587"></a><span class="lineno"> 1587</span>&#160;      rep_mode = i_w;</div><div class="line"><a name="l01588"></a><span class="lineno"> 1588</span>&#160;      seg_override_en &amp;&amp; seg_override_en++;</div><div class="line"><a name="l01589"></a><span class="lineno"> 1589</span>&#160;      ++reg_ip;</div><div class="line"><a name="l01590"></a><span class="lineno"> 1590</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01591"></a><span class="lineno"> 1591</span>&#160;    <span class="keywordflow">case</span> 25: <span class="comment">// PUSH segreg</span></div><div class="line"><a name="l01592"></a><span class="lineno"> 1592</span>&#160;      regs16[REG_SP] -= 2;</div><div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>&#160;      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[extra];</div><div class="line"><a name="l01594"></a><span class="lineno"> 1594</span>&#160;      ++reg_ip;</div><div class="line"><a name="l01595"></a><span class="lineno"> 1595</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>&#160;    <span class="keywordflow">case</span> 28: <span class="comment">// DAA/DAS</span></div><div class="line"><a name="l01597"></a><span class="lineno"> 1597</span>&#160;      <span class="comment">// fab: fixed to pass test186</span></div><div class="line"><a name="l01598"></a><span class="lineno"> 1598</span>&#160;      i_w = 0;</div><div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>&#160;      FLAG_AF = (regs8[REG_AL] &amp; 0x0f) &gt; 9 || FLAG_AF;</div><div class="line"><a name="l01600"></a><span class="lineno"> 1600</span>&#160;      FLAG_CF = regs8[REG_AL] &gt; 0x99 || FLAG_CF;</div><div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>&#160;      <span class="keywordflow">if</span> (extra) {</div><div class="line"><a name="l01602"></a><span class="lineno"> 1602</span>&#160;        <span class="comment">// DAS</span></div><div class="line"><a name="l01603"></a><span class="lineno"> 1603</span>&#160;        <span class="keywordflow">if</span> (FLAG_CF)</div><div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>&#160;          regs8[REG_AL] -= 0x60;</div><div class="line"><a name="l01605"></a><span class="lineno"> 1605</span>&#160;        <span class="keywordflow">else</span> <span class="keywordflow">if</span> (FLAG_AF)</div><div class="line"><a name="l01606"></a><span class="lineno"> 1606</span>&#160;          FLAG_CF = (regs8[REG_AL] &lt; 6);</div><div class="line"><a name="l01607"></a><span class="lineno"> 1607</span>&#160;        <span class="keywordflow">if</span> (FLAG_AF)</div><div class="line"><a name="l01608"></a><span class="lineno"> 1608</span>&#160;          regs8[REG_AL] -= 6;</div><div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>&#160;      } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01610"></a><span class="lineno"> 1610</span>&#160;        <span class="comment">// DAA</span></div><div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>&#160;        <span class="keywordflow">if</span> (FLAG_CF)</div><div class="line"><a name="l01612"></a><span class="lineno"> 1612</span>&#160;          regs8[REG_AL] += 0x60;</div><div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>&#160;        <span class="keywordflow">if</span> (FLAG_AF)</div><div class="line"><a name="l01614"></a><span class="lineno"> 1614</span>&#160;          regs8[REG_AL] += 6;</div><div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>&#160;      }</div><div class="line"><a name="l01616"></a><span class="lineno"> 1616</span>&#160;      op_result = regs8[REG_AL];</div><div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01618"></a><span class="lineno"> 1618</span>&#160;    <span class="keywordflow">case</span> 29: <span class="comment">// AAA/AAS</span></div><div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>&#160;      op_result = AAA_AAS(extra - 1);</div><div class="line"><a name="l01620"></a><span class="lineno"> 1620</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01621"></a><span class="lineno"> 1621</span>&#160;    <span class="keywordflow">case</span> 30: <span class="comment">// CBW</span></div><div class="line"><a name="l01622"></a><span class="lineno"> 1622</span>&#160;      regs8[REG_AH] = -(1 &amp; (i_w ? * (int16_t *) &amp; regs8[REG_AL] : regs8[REG_AL]) &gt;&gt; (8 * (i_w + 1) - 1));</div><div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01624"></a><span class="lineno"> 1624</span>&#160;    <span class="keywordflow">case</span> 31: <span class="comment">// CWD</span></div><div class="line"><a name="l01625"></a><span class="lineno"> 1625</span>&#160;      regs16[REG_DX] = -(1 &amp; (i_w ? * (int16_t *) &amp; regs16[REG_AX] : regs16[REG_AX]) &gt;&gt; (8 * (i_w + 1) - 1));</div><div class="line"><a name="l01626"></a><span class="lineno"> 1626</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01627"></a><span class="lineno"> 1627</span>&#160;    <span class="keywordflow">case</span> 32: <span class="comment">// CALL FAR imm16:imm16</span></div><div class="line"><a name="l01628"></a><span class="lineno"> 1628</span>&#160;      regs16[REG_SP] -= 2;</div><div class="line"><a name="l01629"></a><span class="lineno"> 1629</span>&#160;      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_CS];</div><div class="line"><a name="l01630"></a><span class="lineno"> 1630</span>&#160;      regs16[REG_SP] -= 2;</div><div class="line"><a name="l01631"></a><span class="lineno"> 1631</span>&#160;      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = reg_ip + 5;</div><div class="line"><a name="l01632"></a><span class="lineno"> 1632</span>&#160;      regs16[REG_CS] = i_data2;</div><div class="line"><a name="l01633"></a><span class="lineno"> 1633</span>&#160;      reg_ip = i_data0;</div><div class="line"><a name="l01634"></a><span class="lineno"> 1634</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01635"></a><span class="lineno"> 1635</span>&#160;    <span class="keywordflow">case</span> 33: <span class="comment">// PUSHF</span></div><div class="line"><a name="l01636"></a><span class="lineno"> 1636</span>&#160;      regs16[REG_SP] -= 2;</div><div class="line"><a name="l01637"></a><span class="lineno"> 1637</span>&#160;      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = make_flags();</div><div class="line"><a name="l01638"></a><span class="lineno"> 1638</span>&#160;      ++reg_ip;</div><div class="line"><a name="l01639"></a><span class="lineno"> 1639</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01640"></a><span class="lineno"> 1640</span>&#160;    <span class="keywordflow">case</span> 34: <span class="comment">// POPF</span></div><div class="line"><a name="l01641"></a><span class="lineno"> 1641</span>&#160;      regs16[REG_SP] += 2;</div><div class="line"><a name="l01642"></a><span class="lineno"> 1642</span>&#160;      set_flags(MEM16(16 * regs16[REG_SS] + (uint16_t)(-2 + regs16[REG_SP])));</div><div class="line"><a name="l01643"></a><span class="lineno"> 1643</span>&#160;      ++reg_ip;</div><div class="line"><a name="l01644"></a><span class="lineno"> 1644</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01645"></a><span class="lineno"> 1645</span>&#160;    <span class="keywordflow">case</span> 35: <span class="comment">// SAHF</span></div><div class="line"><a name="l01646"></a><span class="lineno"> 1646</span>&#160;      set_flags((make_flags() &amp; 0xFF00) + regs8[REG_AH]);</div><div class="line"><a name="l01647"></a><span class="lineno"> 1647</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01648"></a><span class="lineno"> 1648</span>&#160;    <span class="keywordflow">case</span> 36: <span class="comment">// LAHF</span></div><div class="line"><a name="l01649"></a><span class="lineno"> 1649</span>&#160;      regs8[REG_AH] = make_flags();</div><div class="line"><a name="l01650"></a><span class="lineno"> 1650</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01651"></a><span class="lineno"> 1651</span>&#160;    <span class="keywordflow">case</span> 37: <span class="comment">// LES|LDS reg, r/m</span></div><div class="line"><a name="l01652"></a><span class="lineno"> 1652</span>&#160;      i_w = i_d = 1;</div><div class="line"><a name="l01653"></a><span class="lineno"> 1653</span>&#160;      regs16[i_reg] = RMEM16(rm_addr);</div><div class="line"><a name="l01654"></a><span class="lineno"> 1654</span>&#160;      regs16[extra / 2] = RMEM16(rm_addr + 2);</div><div class="line"><a name="l01655"></a><span class="lineno"> 1655</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01656"></a><span class="lineno"> 1656</span>&#160;    <span class="keywordflow">case</span> 38: <span class="comment">// INT 3</span></div><div class="line"><a name="l01657"></a><span class="lineno"> 1657</span>&#160;      ++reg_ip;</div><div class="line"><a name="l01658"></a><span class="lineno"> 1658</span>&#160;      pc_interrupt(3);</div><div class="line"><a name="l01659"></a><span class="lineno"> 1659</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01660"></a><span class="lineno"> 1660</span>&#160;    <span class="keywordflow">case</span> 39: <span class="comment">// INT imm8</span></div><div class="line"><a name="l01661"></a><span class="lineno"> 1661</span>&#160;      reg_ip += 2;</div><div class="line"><a name="l01662"></a><span class="lineno"> 1662</span>&#160;      pc_interrupt(i_data0);</div><div class="line"><a name="l01663"></a><span class="lineno"> 1663</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01664"></a><span class="lineno"> 1664</span>&#160;    <span class="keywordflow">case</span> 40: <span class="comment">// INTO</span></div><div class="line"><a name="l01665"></a><span class="lineno"> 1665</span>&#160;      ++reg_ip;</div><div class="line"><a name="l01666"></a><span class="lineno"> 1666</span>&#160;      FLAG_OF &amp;&amp; pc_interrupt(4);</div><div class="line"><a name="l01667"></a><span class="lineno"> 1667</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01668"></a><span class="lineno"> 1668</span>&#160;    <span class="keywordflow">case</span> 41: <span class="comment">// AAM;</span></div><div class="line"><a name="l01669"></a><span class="lineno"> 1669</span>&#160;      <span class="keywordflow">if</span> (i_data0 &amp;= 0xFF) {</div><div class="line"><a name="l01670"></a><span class="lineno"> 1670</span>&#160;        regs8[REG_AH] = regs8[REG_AL] / i_data0;</div><div class="line"><a name="l01671"></a><span class="lineno"> 1671</span>&#160;        op_result = regs8[REG_AL] %= i_data0;</div><div class="line"><a name="l01672"></a><span class="lineno"> 1672</span>&#160;      } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01673"></a><span class="lineno"> 1673</span>&#160;        <span class="comment">// Divide by zero</span></div><div class="line"><a name="l01674"></a><span class="lineno"> 1674</span>&#160;        raiseDivideByZeroInterrupt();</div><div class="line"><a name="l01675"></a><span class="lineno"> 1675</span>&#160;        <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01676"></a><span class="lineno"> 1676</span>&#160;      }</div><div class="line"><a name="l01677"></a><span class="lineno"> 1677</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01678"></a><span class="lineno"> 1678</span>&#160;    <span class="keywordflow">case</span> 42: <span class="comment">// AAD</span></div><div class="line"><a name="l01679"></a><span class="lineno"> 1679</span>&#160;      i_w = 0;</div><div class="line"><a name="l01680"></a><span class="lineno"> 1680</span>&#160;      regs16[REG_AX] = op_result = 0xFF &amp; (regs8[REG_AL] + i_data0 * regs8[REG_AH]);</div><div class="line"><a name="l01681"></a><span class="lineno"> 1681</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01682"></a><span class="lineno"> 1682</span>&#160;    <span class="keywordflow">case</span> 43: <span class="comment">// SALC</span></div><div class="line"><a name="l01683"></a><span class="lineno"> 1683</span>&#160;      regs8[REG_AL] = -FLAG_CF;</div><div class="line"><a name="l01684"></a><span class="lineno"> 1684</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01685"></a><span class="lineno"> 1685</span>&#160;    <span class="keywordflow">case</span> 44: <span class="comment">// XLAT</span></div><div class="line"><a name="l01686"></a><span class="lineno"> 1686</span>&#160;      regs8[REG_AL] = RMEM8(16 * regs16[seg_override_en ? seg_override : REG_DS] + (uint16_t)(regs8[REG_AL] + regs16[REG_BX]));</div><div class="line"><a name="l01687"></a><span class="lineno"> 1687</span>&#160;      ++reg_ip;</div><div class="line"><a name="l01688"></a><span class="lineno"> 1688</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01689"></a><span class="lineno"> 1689</span>&#160;    <span class="keywordflow">case</span> 45: <span class="comment">// CMC</span></div><div class="line"><a name="l01690"></a><span class="lineno"> 1690</span>&#160;      FLAG_CF ^= 1;</div><div class="line"><a name="l01691"></a><span class="lineno"> 1691</span>&#160;      ++reg_ip;</div><div class="line"><a name="l01692"></a><span class="lineno"> 1692</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01693"></a><span class="lineno"> 1693</span>&#160;    <span class="keywordflow">case</span> 47: <span class="comment">// TEST AL/AX, immed</span></div><div class="line"><a name="l01694"></a><span class="lineno"> 1694</span>&#160;      <span class="keywordflow">if</span> (i_w) {</div><div class="line"><a name="l01695"></a><span class="lineno"> 1695</span>&#160;        op_result = regs16[REG_AX] &amp; i_data0;</div><div class="line"><a name="l01696"></a><span class="lineno"> 1696</span>&#160;      } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01697"></a><span class="lineno"> 1697</span>&#160;        op_result = regs8[REG_AL] &amp; (uint8_t)i_data0;</div><div class="line"><a name="l01698"></a><span class="lineno"> 1698</span>&#160;      }</div><div class="line"><a name="l01699"></a><span class="lineno"> 1699</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01700"></a><span class="lineno"> 1700</span>&#160;    <span class="keywordflow">case</span> 48: <span class="comment">// LOCK:</span></div><div class="line"><a name="l01701"></a><span class="lineno"> 1701</span>&#160;      ;</div><div class="line"><a name="l01702"></a><span class="lineno"> 1702</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01703"></a><span class="lineno"> 1703</span>&#160;    <span class="keywordflow">case</span> 49: <span class="comment">// HLT</span></div><div class="line"><a name="l01704"></a><span class="lineno"> 1704</span>&#160;      <span class="comment">//printf(&quot;CPU HALT, IP = %04X:%04X, AX = %04X, BX = %04X, CX = %04X, DX = %04X\n&quot;, regs16[REG_CS], reg_ip, regs16[REG_AX], regs16[REG_BX], regs16[REG_CX], regs16[REG_DX]);</span></div><div class="line"><a name="l01705"></a><span class="lineno"> 1705</span>&#160;      s_halted = <span class="keyword">true</span>;</div><div class="line"><a name="l01706"></a><span class="lineno"> 1706</span>&#160;      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div><div class="line"><a name="l01707"></a><span class="lineno"> 1707</span>&#160;    <span class="comment">/*</span></div><div class="line"><a name="l01708"></a><span class="lineno"> 1708</span>&#160;<span class="comment">    case 51: // 80186, NEC V20: ENTER</span></div><div class="line"><a name="l01709"></a><span class="lineno"> 1709</span>&#160;<span class="comment">      printf(&quot;80186, NEC V20: ENTER\n&quot;);</span></div><div class="line"><a name="l01710"></a><span class="lineno"> 1710</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01711"></a><span class="lineno"> 1711</span>&#160;<span class="comment">    case 52: // 80186, NEC V20: LEAVE</span></div><div class="line"><a name="l01712"></a><span class="lineno"> 1712</span>&#160;<span class="comment">      printf(&quot;80186, NEC V20: LEAVE\n&quot;);</span></div><div class="line"><a name="l01713"></a><span class="lineno"> 1713</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01714"></a><span class="lineno"> 1714</span>&#160;<span class="comment">    case 53: // 80186, NEC V20: PUSHA</span></div><div class="line"><a name="l01715"></a><span class="lineno"> 1715</span>&#160;<span class="comment">      printf(&quot;80186, NEC V20: PUSHA\n&quot;);</span></div><div class="line"><a name="l01716"></a><span class="lineno"> 1716</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01717"></a><span class="lineno"> 1717</span>&#160;<span class="comment">    case 54: // 80186, NEC V20: POPA</span></div><div class="line"><a name="l01718"></a><span class="lineno"> 1718</span>&#160;<span class="comment">      printf(&quot;80186, NEC V20: POPA\n&quot;);</span></div><div class="line"><a name="l01719"></a><span class="lineno"> 1719</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01720"></a><span class="lineno"> 1720</span>&#160;<span class="comment">    case 55: // 80186: BOUND</span></div><div class="line"><a name="l01721"></a><span class="lineno"> 1721</span>&#160;<span class="comment">      printf(&quot;80186: BOUND\n&quot;);</span></div><div class="line"><a name="l01722"></a><span class="lineno"> 1722</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01723"></a><span class="lineno"> 1723</span>&#160;<span class="comment">    case 56: // 80186, NEC V20: PUSH imm16</span></div><div class="line"><a name="l01724"></a><span class="lineno"> 1724</span>&#160;<span class="comment">      printf(&quot;80186, NEC V20: PUSH imm16\n&quot;);</span></div><div class="line"><a name="l01725"></a><span class="lineno"> 1725</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01726"></a><span class="lineno"> 1726</span>&#160;<span class="comment">    case 57: // 80186, NEC V20: PUSH imm8</span></div><div class="line"><a name="l01727"></a><span class="lineno"> 1727</span>&#160;<span class="comment">      printf(&quot;80186, NEC V20: PUSH imm8\n&quot;);</span></div><div class="line"><a name="l01728"></a><span class="lineno"> 1728</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01729"></a><span class="lineno"> 1729</span>&#160;<span class="comment">    case 58: // 80186 IMUL</span></div><div class="line"><a name="l01730"></a><span class="lineno"> 1730</span>&#160;<span class="comment">      printf(&quot;80186 IMUL\n&quot;);</span></div><div class="line"><a name="l01731"></a><span class="lineno"> 1731</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01732"></a><span class="lineno"> 1732</span>&#160;<span class="comment">    case 59: // 80186: INSB INSW</span></div><div class="line"><a name="l01733"></a><span class="lineno"> 1733</span>&#160;<span class="comment">      printf(&quot;80186: INSB INSW\n&quot;);</span></div><div class="line"><a name="l01734"></a><span class="lineno"> 1734</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01735"></a><span class="lineno"> 1735</span>&#160;<span class="comment">    case 60: // 80186: OUTSB OUTSW</span></div><div class="line"><a name="l01736"></a><span class="lineno"> 1736</span>&#160;<span class="comment">      printf(&quot;80186: OUTSB OUTSW\n&quot;);</span></div><div class="line"><a name="l01737"></a><span class="lineno"> 1737</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01738"></a><span class="lineno"> 1738</span>&#160;<span class="comment">    case 69: // 8087 MATH Coprocessor</span></div><div class="line"><a name="l01739"></a><span class="lineno"> 1739</span>&#160;<span class="comment">      printf(&quot;8087 MATH Coprocessor %02X %02X %02X %02X\n&quot;, opcode_stream[0], opcode_stream[1], opcode_stream[2], opcode_stream[3]);</span></div><div class="line"><a name="l01740"></a><span class="lineno"> 1740</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01741"></a><span class="lineno"> 1741</span>&#160;<span class="comment">    case 70: // 80286+</span></div><div class="line"><a name="l01742"></a><span class="lineno"> 1742</span>&#160;<span class="comment">      printf(&quot;80286+\n&quot;);</span></div><div class="line"><a name="l01743"></a><span class="lineno"> 1743</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01744"></a><span class="lineno"> 1744</span>&#160;<span class="comment">    case 71: // 80386+</span></div><div class="line"><a name="l01745"></a><span class="lineno"> 1745</span>&#160;<span class="comment">      printf(&quot;80386+\n&quot;);</span></div><div class="line"><a name="l01746"></a><span class="lineno"> 1746</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01747"></a><span class="lineno"> 1747</span>&#160;<span class="comment">    case 72: // BAD OP CODE</span></div><div class="line"><a name="l01748"></a><span class="lineno"> 1748</span>&#160;<span class="comment">      printf(&quot;Bad 8086 opcode %02X %02X\n&quot;, opcode_stream[0], opcode_stream[1]);</span></div><div class="line"><a name="l01749"></a><span class="lineno"> 1749</span>&#160;<span class="comment">      break;</span></div><div class="line"><a name="l01750"></a><span class="lineno"> 1750</span>&#160;<span class="comment">      */</span></div><div class="line"><a name="l01751"></a><span class="lineno"> 1751</span>&#160;    <span class="keywordflow">default</span>:</div><div class="line"><a name="l01752"></a><span class="lineno"> 1752</span>&#160;      printf(<span class="stringliteral">&quot;Unsupported 8086 opcode %02X %02X\n&quot;</span>, opcode_stream[0], opcode_stream[1]);</div><div class="line"><a name="l01753"></a><span class="lineno"> 1753</span>&#160;      <span class="keywordflow">break</span>;</div><div class="line"><a name="l01754"></a><span class="lineno"> 1754</span>&#160;  }</div><div class="line"><a name="l01755"></a><span class="lineno"> 1755</span>&#160;</div><div class="line"><a name="l01756"></a><span class="lineno"> 1756</span>&#160;  <span class="comment">// Increment instruction pointer by computed instruction length.</span></div><div class="line"><a name="l01757"></a><span class="lineno"> 1757</span>&#160;  <span class="keywordflow">if</span> (calcIP)</div><div class="line"><a name="l01758"></a><span class="lineno"> 1758</span>&#160;    reg_ip += (i_mod * (i_mod != 3) + 2 * (!i_mod &amp;&amp; i_rm == 6)) * i_mod_size + base_size[raw_opcode_id] + i_w_adder[raw_opcode_id] * (i_w + 1);</div><div class="line"><a name="l01759"></a><span class="lineno"> 1759</span>&#160;</div><div class="line"><a name="l01760"></a><span class="lineno"> 1760</span>&#160;  <span class="comment">// If instruction needs to update SF, ZF and PF, set them as appropriate</span></div><div class="line"><a name="l01761"></a><span class="lineno"> 1761</span>&#160;  <span class="keywordflow">if</span> (set_flags_type &amp; 1) {</div><div class="line"><a name="l01762"></a><span class="lineno"> 1762</span>&#160;    FLAG_SF = (1 &amp; op_result &gt;&gt; (8 * (i_w + 1) - 1));</div><div class="line"><a name="l01763"></a><span class="lineno"> 1763</span>&#160;    FLAG_ZF = !op_result;</div><div class="line"><a name="l01764"></a><span class="lineno"> 1764</span>&#160;    FLAG_PF = parity[(uint8_t) op_result];</div><div class="line"><a name="l01765"></a><span class="lineno"> 1765</span>&#160;</div><div class="line"><a name="l01766"></a><span class="lineno"> 1766</span>&#160;    <span class="comment">// If instruction is an arithmetic or logic operation, also set AF/OF/CF as appropriate.</span></div><div class="line"><a name="l01767"></a><span class="lineno"> 1767</span>&#160;    <span class="keywordflow">if</span> (set_flags_type &amp; 2)</div><div class="line"><a name="l01768"></a><span class="lineno"> 1768</span>&#160;      set_AF_OF_arith(op_result, i_w);</div><div class="line"><a name="l01769"></a><span class="lineno"> 1769</span>&#160;    <span class="keywordflow">if</span> (set_flags_type &amp; 4) {</div><div class="line"><a name="l01770"></a><span class="lineno"> 1770</span>&#160;      FLAG_CF = 0;</div><div class="line"><a name="l01771"></a><span class="lineno"> 1771</span>&#160;      FLAG_OF = 0;</div><div class="line"><a name="l01772"></a><span class="lineno"> 1772</span>&#160;    }</div><div class="line"><a name="l01773"></a><span class="lineno"> 1773</span>&#160;  }</div><div class="line"><a name="l01774"></a><span class="lineno"> 1774</span>&#160;</div><div class="line"><a name="l01775"></a><span class="lineno"> 1775</span>&#160;}</div><div class="line"><a name="l01776"></a><span class="lineno"> 1776</span>&#160;</div><div class="line"><a name="l01777"></a><span class="lineno"> 1777</span>&#160;</div><div class="line"><a name="l01778"></a><span class="lineno"> 1778</span>&#160;}   <span class="comment">// namespace fabgl</span></div><div class="ttc" id="namespacefabgl_html"><div class="ttname"><a href="namespacefabgl.html">fabgl</a></div><div class="ttdef"><b>Definition:</b> <a href="canvas_8cpp_source.html#l00036">canvas.cpp:36</a></div></div>
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